KREX2450 K Body REVO Clamp Kit, 2 x 24 In., 2 x 50 In. and 2 KBX20 Extenders - 1700 lbs Nominal Clamping Force. Spreader, and Woodworking Accessories - Clamps and Tools for Cabinetry

Great design, easy to use, best clamps on the market for this style by far. They make gluing up panels, tops, etc. much easier due to flat bottoms and easy movement of clamp side.

It’s a clamp, and it does it’s job very well.

Good Build quality, good value for the money, a bit in the heavy side, a good compromise since you want strength over light weight.

These clamps are incredibly strong and durable and very useful when you need a long clamp and/or a lot of strength: a situation when many other clamps fail. A few times I have used them to exert a lot of force - maybe 600 lbs - and there was no indication of them bending or failing. In fact, they will break your project if you aren't careful. The set comes with two extenders that allow you to attach two clamps together to extend the overall length. I have seen some people criticize these as useless, but when I was building a cabinet that was 5 feet long I used them constantly, and they worked incredibly well. They can be reversed and used as spreaders, even over long reaches, which is occasionally very useful. They also come with little tabs/brackets/whatever they are called that let you support your project on them without actually resting the project directly on the bars. This is useful, for instance, when you have a drawer front that extends a little bit below the rest of your drawer, and you want to support the bottom of the drawer instead of the drawer front. They are certainly expensive, but when you need this sort of length and strength there aren't many options. My only real issue with these clamps is the difficulty of using them. They are very difficult to move along the length of the bar. I spent probably an hour figuring out the trick: you have to screw/unscrew the handle to find that sweet spot where the clamp is mostly released but not entirely, then jiggle the handle a certain way until the clamping mechanism disengages. Then you keep the handle in the same point as you move the clamp up and down to where you want it. Even after learning the trick, it can still take a several minutes to move the clamping any significant distance, and for this reason I don't use the clamps if I have something else that will work. I wish it had some sort of quick-release mechanism.

The clamps are high quality and hold materials together.

Very heavy package and 50 inch clamps. Shipped via UPS and surprisngly no damages to the clamps and connectors. Box was intact too. All made in China.

Piece of junk bought two of these packages almost $700 first time I used them putting together a table top everyone of them stripped out they are now trashed out and garbage. My suggestion don’t buy this junk!!!!!!!!!

the clamps are tough. They hold size once set but hard to adjust to the size. The adjustable heads do not slide along the bars smoothly.