This Super CoolClamp mount with 1/4" screw, made of lightweight Aluminum Alloy.Mounts onto anything like cameras, lights, umbrellas, hooks, shelves, plate glass, cross bars, even other Super Clamps.Cool Clamp can MAX open 54mm, and minimum 15mm rods;comes with 1/4"-20 Camera Hot Shoe Mount w/ a Swivel Ball-Head,360º Articulation, for cameras...