Master Lock Universal Coupler Lock Review

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It is a simple device really. The key locks and unlocks it. When you unlock it, the slide comes out where the ball would be in the coupler. When you want to lock back on to the coupler, you push it back as far as you can and turn the key and it will not go anywhere. We will show you how it works with a few different couplers. You unlock it like that, if you can latch the coupler and slide it together at the same time. That way it is locked here and it cannot go anywhere. The pin is already in, so take the key out and that is not going anywhere. Now we will show you how it works on an A frame coupler. It is pretty much the same thing; slide it on, latch it down, run it as close as possible like so and there you have it. No one can get a ball in there and take off with your trailer. Now we will show you how it attaches to a 2-5/16 coupler. As you can see this lock will fit a variety of different couplers. To cover that we started with a 1-7/8 coupler and moved our way up to a 2 inch then finished with a 2-5/16. All different couplers, and this worked on all of them just fine.