The ring is well made. The package states this is a universal ring with all other brands...not quite. It will not fit the Conntek plug which is pretty common on Grand Design units.

The threads are the correct pitch and the ring initially threads on the connector plastic threads but soon becomes a bit tight. After several attempts I managed to get it to thread on and off easily enough.

But the biggest issue is the Conntek plug has a hard flange, not soft like the Furrion or other brands. I measured the flange diameter and the ring ID, and it's just not going to happen. The ring ID is 0.530" and the Conntek flange OD is 0.650" - a difference of 0.120", almost an 1/8"! You can't heat that ring up enough for to get close to 0.120" and you are not forcing it over the hard flange without breaking something. For me, I have a metal lathe so I chucked up the ring and took about 0.050" off the ID. After sanding the edges smooth I was able to get the ring on with dish soap and a struggle. When installed, I still had plenty of flange engagement.

This ring is not recommended for Conntek cord plugs. 3605511

Installed easily on the shore power cord. Threads were a perfect match with camper plug. Definitely quality construction. 3625516

Much nicer having the metal lock ring as plastic that will definitely break if you should drop it. Installation was pretty easy, hand sanitizer is your friend, lube up the inside tapered lip of the lock ring and the ridge on the plug. I got one side started and pushed the other side on a wood block and it went right on. Locks on good! A little pricey in my opinion. 3541630

Was easier to install than I thought onto my original OEM Furrion 50 amp RV power cord. Used some hand sanitizer to help lubricate the new ring then just twisted it on. 872290

very solid won't break like the plastic ones 3636575

Works well. Saved me from being a complete new cord. 3638658

A few finger pounds of pressure and my new metal locking ring went on without a problem. Easy install. 1034596

Nice lock ring. Just didn’t work with our Rv cord and trailer 3540251

Too a little effort, but it slipped right on our cable. Saved us a ton of money vs buying a new cable. 3588826

I paid for this product and it was never delivered 3551720

Fits well and works perfectly. Don’t have to worry about this one breaking like the plastic original. 3539856

Excellent, but very difficult to get on the female coupling. Used silicone lube, and put the ring in boiling water to expand somewhat, used mechanix gloves and pushed it on, then hit it with ice water to constrict it. Fits perfectly now! 3407952

Correct part fit great great service couldn't have ask for anything more . Great job E trailer 3421696

I had owned my camper about 3 months when the cheap plastic screw cap broke into, I hunted everywhere for a replacement, cause it wasn't making a good connection and we would get shocked from time to time. I found these and actually bought 2 cause I figured they would be cheap and break as well boy was I wrong 1 year in and its still looks as good as the day I installed it. Thanks etrailer. 800750

Great item better than plastic that the trailers came with 3387781

Works great much better than the plastic original had to figure out how to install it but used some spray silicone and tapped it on with a hammer 3353692

Easy to add to my cord. Yet too attach to the camper. Definitely better than the cheap plastic lock nut. 3304955

Very easy install on my rvs 50 amp power cord. The stock plastic ring had cracked and was no longer serviceable. This one slid right on with a little dish soap. Took less than 5 minutes and I shouldn't have to worry about it again. 3278586

Worked great. Easy install. Way better than the cheap plastic original. 1146007

Recieved item, was well packed. the ring did not fit my RV 50 amp recepticle. It seemed to be too tight too screw onto the threades. Tried everything I could but it was just too tight. I tried several plastic rings and they screwed on fine without any problems. I screwed the metal ring up by using channel locks to get it off, so I am going to eat it and chalk it up to "Buyer Beware".I believe the ring was just off enough to make the differance. 2025 Grand Design 2970 RL. 3480817

The ring on my 50-Amp shore power cord broke, and left the plug "internals" handling the heavy weight of the cord. This ring was reasonably easy to slip over the end, so I was concerned that it might not secure the cord very effectively. But it works quite well once it's in place. Much sturdier than the plastic one from another vendor that cost almost twice as much! 994103

The metal should be standard on all RV power cords. Easy to install and you do not have to worry about it breaking 1126225

Original plastic ring broke after about three years of camping. Was told by serval (big name camping chain) stores/parts suppliers that they did not sell such a product and that I would have to buy a new cord. Found this on etrailer.com. Read the reviews and decided to order one. Used just a touch of liquid soap and the ring snapped on very quickly and easy. With this product designed for marine use it should withstand the elements. Time will tell. 1058964

My replacement ring was actually received 2 days prior to the original stated delivery date. It was to replace the original plastic threaded ring, which had cracked. Ring was exactly as advertised. Very well made, and being metal, it should last much longer than the original plastic ring. It was easy to put onto the end of my cord, and fits the connector on the 5th wheel perfectly. It is well made and should last for years. 1423215

Plastic ring was missing when I bought a used travel trailer and this worked perfectly to hold the plug in place. No worry about plastic breaking. A little tight getting on but a little dish soap solved that. Extremely happy with purchase. 1434239