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The actual locking mechanism is the difference. The Trimax Heavy Duty #TMX42ZR has a much more robust hardened steel lock while the Trimax #TMX65FR uses a tube key style lock for the main lock.

...I am interested in Trimax Tmx42zr. And I need to know if it will fit my tire size. the size is LT 265 75 R16. looks like I would need the jaws to open 12 in. to go around my tire...

Hello Shannon, thanks for reaching out. We can definitely get you one of the Blaylock EZ Trailer Wheel Locks #BLEZ-300, but unfortunately there is no way for us to match the key to your CRS lock. The Blaylock lock will use its own key. We can only…

Oh it won't stand up well to an angle grinder at all. The Trimax Heavy Duty Adjustable Wheel Lock item #TMX42ZR is designed to stop the casual thief with bolt cutters. Not a dedicated criminal with power tools. I am sorry but I do not have…

The three most common lug stud sizes for a trailer are 1/2"-20, 9/16"-18, and 5/8"-18. In order to make sure you get the correct lug nuts you need to measure the lug studs on the trailer now as we have no way to look this up for…

Hey Barry, it sounds like you're looking for the Dexter Electric Trailer Brakes #K23-472-473-00. These are Dexter brakes that measure 10" diameter x 1-1/2" wide, and are designed for 3,000 lb axles.

The etrailer Trailer Wheel Lock, part #288-02020, will fit your UTV provided its tires are between 6-3/4" -10-1/2" wide. Another option is the Trimax Trailer Wheel Chock and Lock - 12 - 16-1/2" Wide Tires, part #TMX62ZR, which can fit…

It is possible to move a trailer by just attaching to it's safety cables. Most people would avoid the method you described as the trailer will slam into the back of the tow vehicle while stopping. Basically it wouldn't be a thief's ideal…

For your 5th wheel camper, the wheels will have holes that will fit the 1/2 inch and leave space for easy installation. The lug nut are coned to help center the wheel on the hub so there won't be any slop or issue. Wheels like the Aluminum HWT…

Hello Tyrone, thanks for reaching out. We do carry the Trimax locks, but I am sorry to say that we do not offer replacement keys for them. You may be able to contact the manufacturer directly to get new keys, or you might be able to have a locksmith…

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

Hey there Robert, thanks for the question and even though it is not listed, a 205/75-15 tire is absolutely compatible with the Trimax Trailer Wheel Chock and Lock #TMX75FR.