Ultra-FabProducts 21-001070 Ultra Deluxe Chock and Lock, (Pack of 2)

These wheel chocks work great. The price was right (for a set of 2) at about $65, they are easy to use and very effective. I tried them on my 24ft 5th wheel and they hold it in place very well (even with the tow vehicle giving a slight tug). Once the initial adjustment is done prior to installation, the install is a snap. Very little effort needed. They are compact compaired to others on the market. Like another reviewer mentioned, watch your fingers.......but if you use the built-in handles, you should be fine. I'm a happy camper.

I have a large and heavy trailer and they work nice. The trailer seems to be more stable,(not sure if its just in my head).Love the ease and quickness of stablizing the trailer.Would recommend

These work great, takes a little time to get them adjusted. Once they are adjusted you don't have to mess them again just put them between the tires and push the lever. Very snug fit, easy to put on and very quick removal, great product.

As a child, my mother told me not to say anything unless I can find something nice to say. So, here it is. They were clean and exactly as pictured and described on Amazon's site.Now here's the rest of the story. The material is ok but the engineering is horrible. There is an adjustment nut threaded on to a long threaded shaft to create a starting point for adjustment between your tires. When completely closed the nut is about 2.375" (2 3/8") from the start point. That means you would need to tighten the nut that distance before it begins to engage the adjust mechanism, and that is before you open the wheel chock to engage with the tires. The tires are rarely the same distance apart when parking from spot to spot (more on a 3 axle) unless you are on pavement and pulled forward straight into a space without having to turn in. On my 3 axle 5th wheel, the gap from each set of tires is about 4" +/- 1" depending how I had to park. That means the adjustment nut requires at least an additional 1.5" (1-1/2") of tightening before it would begin to engage the mechanism. Then the Chock requires you to push down on a handle (painful if bare handed, more so if it's cold) to force the chock open the final ." (1/2") or so which does snug the tires, not tighten them. Then you would need to tighten the nut another 1" or so to actually make the chock tight, however, if you tried this, you would most likely strip the weak threads (nut or shaft). Vary poorly engineered, I'll be returning these to buy these instead.http://www.amazon.com/X-Chock-Wheel-Stabilizer-Handle-28012/dp/B002XLHUQG/ref=sr_1_2?s=automotive&ie=UTF8&qid=1415073326&sr=1-2&keywords=rv+ChockThat is what I though I was buying. I just didn't pay close attention when I ordered it. Never even considered that Amazon would sell something like this.

This chock works well and does it's job well. The only issue I have is, the adjustment is a small nut on one end, and in order to get it adjusted to the point where the chock will lock properly against the tires is, to use a wrench and turn it what feels like a thousand times. And then once you have it adjusted to the right tension, then it won't collapse fully unless you were to adjust the nut back out again.It needs a minor redesign to use a quick adjust method.Other than that, it works well.

My parents had a similar set for their travel trailer that required you to tighten them down with a wrench like thing.These are so much better in that after you've adjusted them you just pull the lever up into the locked position and you're good!I use the lock hole to keep someone from swiping them or my kids from playing with it.Great sturdy construction and easy to use/setup!

First of all I had to send these back because they don't expand enough to reach both of my tires. In spite of the fact that the packaging clearly shows a large fifth wheel, the are too small for most travel trailers. They only expand to just over 5" and the distance between the tires on my 26' travel trailer is about 6". Having said that, I would have sent them back anyway because of the poor design of the adjustment screw. In order to adjust them, you would have to use a wrench to adjust a lock nut a few inches along a long screw. Forget using any type of socket wrench. The best you could hope for would be using a standard wrench to adjust the nut about an 8th of a turn at a time for literally 3 inches along the screw. No thanks!

Excellent chocks. Easy to apply and they hold the wheels of our fifth wheel really firmly and take out a lot of the movement. They have been admired by other RVrs.

Overall good product

Solidement construit, peut recevoir des cadenas. En plus d'empêcher la roulotte de descendre la pente, sert à diminuer les mouvements de va-et-vient quand on n'utilise pas les pieds stabilisateurs. Je considère que c'est un bon investissement.

The chock/wheel locks work very well and keep the wheel from moving. Care must be taken to adjust them before use and they may require minor adjustments when the trailer load is changed.

Great product work very well

Work great.