Pros: Price, of course.

Solid build.

Everything locks up very well on a MIL-STD-1913 picatinny rail.

Cons: -Very limited clamping distance/adjustment. If the light or object in the mount is not pretty much exactly 1"/2.5cm, you'll have to use spacers. The strip of metal that clamps down only goes about 1mm into the inner diameter of the mount.

-The clamping surface is only the middle portion, as seen in the pictures. That means the friction bearing surface is only the 12mm in the middle of the mount.

Other Thoughts: THE MEASUREMENTS IN THE PICTURE ARE WRONG/CONFUSING:

The inner diameter of the mount is 1 inch, or 2.5 cm. The outer diameter is 2.8cm. The dimensions of the mounting surface are the same for any standard picatinny/MIL-STD-1913 rail.

The cross screws span 4 slots of the rail.

This is the same mount as in sku.976, the flashlight/gun mount bundle. See more pictures of this mount there.

To put my Streamlight Scorpion in this mount, I had to make spacers out of three layers of a plastic soda bottle.

Bottomline: Got a 1"/2.5cm light? Want to mount it on a picatinny rail?

Get this.