This high impact mini plastic clamp is the ticket for installing any accessory to your ATV tube rack or handlebars. Adjustable size fits 3/4", 7/8" and 1" tubes. Even the tension is adjustable with the twist handle! The handle then cams over to lock in place. The great part is this is quick release without tools! Just pull the handle and remove the clamp. Clamp body size (when closed) is approximately 1-3/4" long by 1" wide by 1-3/4" tall. Each clamp has two M6 (or 1/4") holes for universal mounting of accessories. Great for mounting cell phone mounts, gps mounts, lights, drink holders, tool holders, gun mounts, etc. Sold EACH.