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Nothing spoils a campsite faster than a trailer that rocks with every step. This pair of leveling scissor jacks holds steady with a combined capacity of 15,000 lbs—7,500 lbs per jack. Each one extends from 5" to 30" so you can take the wobble out of uneven ground. The bow-tie base keeps them planted on softer surfaces, giving you a solid, secure feel once you’re parked.
Getting these jacks set up doesn’t take fancy tools or custom brackets. Each unit mounts directly under the frame using bolts or welds, and the included crank handle fits the 3/4" screw that raises and lowers the jack smoothly. With both installed, you can steady your rig in just a few turns.
Rust, grit, and road spray are tough on gear, but these jacks are built from strong steel to handle years of use. The wide base helps spread weight evenly while resisting sinking into dirt or asphalt. When collapsed, each measures 32-1/2" long and 4" high for a low-profile fit that stays out of the way when not in use.
Whether you’re setting up for the weekend or storing for the season, having the right range makes all the difference. With up to 30" of lift and a retracted height of just 4", these jacks give you the reach to level your setup anywhere while staying compact when stowed. They’re designed to stabilize a portion of your trailer’s weight—not to lift it completely—so your frame stays supported and steady every time you park.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Hi. Matt with etrailer. If you're looking for a way to stabilize your trailer but you want something that's gonna be affordable and just really simple to use, then the Stromberg Carlson is gonna be a great jack for you. So let's check it out. (jack whirring) So this will be great for anyone who is going off camping on some uneven terrains with you and your RV. This is gonna help stabilize everything so you can sleep a little bit more comfortably at night.
But here at etrailer, if you do decide to go with this, we'd love to see what type of areas you're using it in. So send us a picture or leave us a review how you're using it. Today I'm mainly gonna be focusing on how it's gonna be like to actually use this. Then I'll go over my final thoughts about it and then I'll show you how to install it. So let's jump right into using it.
So you are gonna get this bit that is able to be used with a drill. It isn't gonna come with a manual crank, but most people are gonna have one of those on hand. If you don't already, you can actually find one of those on our website. But using it so far, it feels fairly smooth. I'll just put it in the up position.
(jack whirring) And that's something I will say, if you don't have a very strong drill or you don't have it in the higher position, then sometimes it won't move if you already have some pressure on it. But now that I've kind of put it in a stronger mode, (jack whirring) it moves just fine. And this actually moves fairly quick. (jack whirring) In no time, this has already been in the only retracted position and you're gonna have a maximum and you're gonna have a minimum. The minimum here is gonna be five inches from your frame where you're mounted up to.
And then the maximum position that it's gonna be stretched out is gonna be 30 inches. So you're gonna have a fair amount of travel with this. And let's see that in action one more time. (jack whirring) That moves fairly easy. Now let's talk about how our foot is sitting in place. And what I like about these bow tie feet are that they're fairly large for the most part. Now, you are gonna be missing out on a little bit of what's in front of it. So if you're on some more rocky terrains, this can be a little bit finicky sometimes. If you do need to swap this out, this is really easy. All you gotta do is remove these bolts and nuts at the bottom and put a new one on here. And you are gonna get a few things with this kit, besides this adapter here, you are gonna get two jacks. So you can maintain either the front or back of your RV. If you need four, you can just get another kit from our website, since these are a little bit more affordable. And you are gonna get some hardware so you can mount it to your RV. That's kind of nice that they do make that process a little bit easier compared to some of the other kits I have seen around. In my opinion, I think this is gonna be a solid choice for most people who just need that extra stabilization, because we are gonna get a lot of travel with this jack here. The only things I do wish this had was a actual like manual attachment. So if my drill's not working at that time or if it's dead, I can just manually lift it up. But chances are you're probably already gonna have one on hand. Now, when it comes to the installation, it's actually a fairly simple process. If you're curious to see what this process looks like, just stay tuned, we'll walk you through it. To begin the installation, what I'm gonna do is find a good spot to place our jack. So all you have to do is come over here to the side and just kind of mark things out. So if I'm gonna place it, I know somewhere in this general area, I wanna make sure when this sits up there, this is gonna sit up there flush and nothing's gonna get in the way. You also wanna find a point where when you're drilling through here, you wanna make sure you're not gonna go into anything vital like any wiring or anything like that. Now, if we're actually marking out where we're gonna drill, there's a couple ways of doing that, but make sure before you do any drilling that you have your trailer chalked up so it's not gonna move around on you. When you are ready to start drilling, what I'm gonna do is there's two ways of doing this. You can put this in the area where you want this to sit, and you can grab some clamps and clamp it into place like that. You could do it that way, or if you have a friend on hand, they can actually come by and hold this up as you mark it into place. But before I do that, I'm just gonna extend this all the way to make sure it is gonna make ground contact. This is what mine's looking like right now, and I still got some room to even travel up, so I know this is gonna be in a good spot. So once you're done with that, just get this out of your way for the time being. (jack whirring) Yep. And I could actually show you a mark I already made. 'Cause we already drilled out one spot over here. Right here. And then right over on this side I have my other mark. So this is gonna let me know where I need to drill now. But it's gonna be the same drilling process on either side. Grab a 1/8 inch bit, we'll drill that hole through. Once that's done, we'll go to a 5/16. And once that's done, you have the option to enlarging that hole to work with any type of bolt you have. Now, if you're not gonna be using any type of bolt and nut, this kit is gonna come with some self tappers, so you can use those instead. (drill whirring) (wind howling) I'm gonna be using bolts today. And if you're gonna be doing that too, you might need to enlarge the holes a little bit more. If you're just using the screws, you can screw this up into place. But the way this process is gonna look is with the bolts, I'm gonna grab a bolt, a flat washer, and a split washer, put that through the opening. And you could do this one of two ways. You could just kinda hold this up there or you could jack it all the way up and have it stand that way. Sometimes it might kind of pivot on you, it might be a little bit awkward still. So you can still just do it like this, match it up with that hole. And then we're just gonna get it started on one side. Once it's started on one side, we're gonna do the same on the other. When you're ready, you can tighten everything down, and if you are gonna be using those screws, they will say the size socket that you need in your instructions. Just make sure you have a wrench on the very top to hold it down tight. (drill whirring) And once one side is done, we're gonna do the same to the other. And you are gonna have four holes that you can use. I recommend putting four up here. Once you have all those bolts or your screws tightened down and torque down the spec, you should be good to go. And I can actually check if this is gonna work properly. (jack whirring) There we have it. That works pretty smoothly. And from there you can repeat that same process on the other side. But other than that, that'll pretty much do it for the installation. And of course if you guys have any other questions, let us know here at etrailer. And again, I'm Matt. Thanks for watching.
Customer Satisfaction Score:
97% were satisfied with this product
3% of customers were not satisfied
Ratings & Reviews
High quality. I bolted them in place. they give you plenty of mounting holes for any position.
Etrailer was very pleasnt to deal with. Highly recomended.
They worked well with our application. Didn't use them for trailer specifically but they still worked as what we have envisioned them to be.
I ordered this jack set and I'm very pleased with not only how fast I got them but how they look and work. I ordered the socket also and it works great with my handydandy drill. I am using them on my camper to level it up. Thanks so much for having so much and such a great price.
Fit on my 2021 Cougar 22MLS. We had an unfortunate mishap with the auto stabilizer jacks and needed a good replacement without breaking the bank. These work great.
The leveling jacks I ordered have gone up considerably in price, but the service was great and they shipped very quickly. Received them in only about 5 days. Very satisfied with etrailer.
I have ordered several items for etrailer and all have preformed as stated, price was better and service was quicker.
They proved a load of information about product or help with installation.
*****
2 of the jacks on my trailer were bent and difficult to operate. Purchased this set as replacements, removed the mounting plate and they bolted right in. Perfect match and they work like when the others were new. Ordered them on Wednesday they arrived the following Monday. Nice easy process.
These jacks are solid and easy to install. Do not come with mounting hardware. I used 5/16” x 1.5” bolts with washers and lock nuts. Also added some locktite to be sure they don’t come loose. Standard attachment on most trailers seem to include one or two bolts, then the rest with self tapping screws, which isn’t very secure in my opinion. I had to drill out some of the smaller holes to fit the 5/16” bolts but an easy job for a DIY project. Thanks etrailer for selling a great product and quick delivery.
Very well made and very strong! Now I can pick my little camper off the ground! lol!!
Excelente jacks ??
Exactly what I ordered, arived in 3 days easy installation completely satisfied .
Glad I went with the 30” version, however the “self tapping” bolts that come with it will not work on the steel mounting beams as the steel is too thick and the bolts just strip even pre drilling according to the instructions. I had to get some bolts with nuts and lock washers as I didn’t want to weld them
Works great for my teardrop
Very pleased with etrailor product the stabilizer jacks fit perfectly and their prompt service made it possible for us to take off to Henry's Lake Idaho Yellowstone and Grand Teton
They are so nice go up and down with ease and are taller than my last ones making it easier to level without blocks. Our first trip with the new lifts is coming up and we're excited to try them out.
Brooke M.
6/24/2025
When is the next trip to really put them to the test? Where will you be headed to?
Much heavier duty than the original jacks. Only have installed one so far, due to weather conditions. Delivery was fast, ordering very easy.
Installation when much easier than I ex pected.
The jacks work perfect. The only issue I had was with the supplied mounting screws that came with it. I drilled the holes as it said to in the instructions. All of the screws stripped out. I had to run to the hardware store and get some with case hardened with nuts to mount them. That was the only issues I had. The jacks seem stable and there’s no rocking of the camper.
Lazer S.
4/14/2026
Glad the jacks are working well for you, Lloyd! Sorry about the hardware though. I think this is the first time I have heard all of them failing like that. I will have our QC guys check out our current stock to see what's going on with that. Hopefully all of them aren't including soft self tapping screws. What kind of camper did you install these on?
Great product, simple installation. Will buy again!
Very pleased both sets that I purchased from you!
They fit perfect and are a heavier duty looking jack that what was on it. Very pleased with the service, delivery and product.
Customer service from e-trailer has been top notch both times I purchased from them. I highly recommend this company for your travel trailer needs.
Danial
1/15/2026
The product is still working as intended. Routine maintenance, such as cleaning the footpads and greasing the screw, is needed to keep them moving freely. I will purchase again if I ever need an additional one. I purchased 6 of the jacks due to the length of my travel trailer. They are attached near the corners and in the middle. This setup has eliminated the sag in the middle and provided solid support, reducing movement when the kids are running about.
The JSC-30 jacks were disappointing when functioning. The quality of the worm gear was a rough function like there was a washers missing. My old pairs had washers creating smooth function and no wobble. The only reason they got a three star is that they are rated at 7500 lbs x2 and not the 5,000 lbs x2 as advertised. Etrailer.com shipments have been right on time and I do appreciate their email updates.
The jacks are fantastic. The hardware sucks. I read the reviews that basically said the same thing. I went ahead and ordered them and figured I would see for myself. Turns out the reviews were correct. It would be a simple fix to improve the hardware but I guess it’s too much to ask. My other suggestion would be to include actual printed instructions for us old school folks.
The jacks are very nice and sturdy, however the mounting bolts are very subpar. I ordered a pair of these a year ago, or two ago, and had the same problem with the bolts stripping out. I followed the instructions and drilled an 1/8” pilot, then a 5/16” hole, but they stripped out each time.
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Abraham
7/15/2025
Still working great no issues