Roll Bar Clamp -2Pack, Tube Clamp 1.625inch 1.75inch 1.875inch 2.0inch Light Bar Mounting Bracket Available Diameter Round Horizontal Bar for ATV UTV Whip Flag Mount(1.625~2.0" Clamp)

I tried another product that Amazon seems to push more than this brand, and that one was a full 1/8" smaller than specs, preventing it from fitting at all. The Lizard Go clamps are on-spec, fit perfectly and are well-made. They come with multiple sizes of rubber spacers that can be mixed and matched to provide the best fit for a particular bar. Once properly installe, they won't budge, even under significant pressure. I'm using these to attach equipment to a grab bars - definitely not the intended use and probably not covered by the manufacturer's liability - but they are safe and secure.As others have noted, the metal is a soft aluminum and the screw treads are easily stripped if one relies on the screws to bring the halves together. That's just the nature of aluminum and it's true of even a top-of-the-line laptop Apple laptop case. The proper way to apply these is to clamp the two halves together - bare hands are adequate - and to then tighten the screws to where they just meet resistance. Aluminum has the advantage of being sturdy, corrosion-resistant and much lighter in weight than stainless steel, which is perfect for the intended application.

Had these on the push bar of my truck for the last few months. Noticed one of my lights was sagging a little bit. Went to tighten and noticed the threads inside the aluminum housing were gone.Mount had only really seen highway miles, worried it would give up sooner on rough roads.Will tap new threads and see how it goes, but might have to get a new mount.

These clamps work great for my homemade rifle rack.

These are made well, however, the rubber inserts that allow you to fit the mounts on different diameter bars tend to distort a bit causing the clamp to become a bit loose. These are also a bit bulky, more than I expected based on the photos. The mounting hole was a bit small for my LED whip mount and had to be enlarged.

Quick shipping and quality product

these are exactly what i needed,,,and the extra shims give you many options

Very easy to install. Good product and holds tight to the shocks of my wr250

Perfect for many sizes