Material metal aluminum alloy, black anodized metal structure, has higher durability. Universal 1/4-inch tripod screw metal refrigeration shoe, can mount the flash on the bracket. Works on Nikon and Canon flashes, displays, ring lights, trigger devices, microphones, and a wide range of camera accessories. Precision made (1/4' to 1/4')(1/4' to 3/8')(male to male) metal tripod screws,international standard. This is an universal adapter spigot stud for the Photography studio use.International Standard universal camera 1/4' 3/8'screw fits for any dslr slr camera tripod monopod light stand etc,. that is with 1/4' 3/8'hole.