Haoge Mini Super Clamp with 1/4" 3/8" Screw Thread for LCD Monitor DSLR Camera DV Tripod This crab clamp is Ideal company for Magic Arms, Light Stand, Tripod, DSLR Rig, Studio Products incuding on-camera Flash, LED Lights, LCD Monitor, Follow Focus and other accessories. Strong construction, made of stainless steel and aluminum alloy. Non-slip rubbers on the inner side provide strength and stability. Come with 1/4" & 3/8" screw thread for extended use.