These Desk Clamps are machined from aluminium, and can clamp onto horizontal surfaces up to 2.25” (62mm) wide 

They feature 2x 1/4”-20 threaded holes and 1x 3/8”-16 threaded hole. 

Please note : this listing is for a single desk clamp. Please order as part of the Back Mount Bracket bundles if you wish to use this for mounting Rexy Wheels to a desk.