This is a kind of camera tripod thread adapter convert screw. It is made of bronze, and can achieve the conversion between any standard 3/8" thread and standard 1/4" screw. The fittings can help users to mount a professional-style head with a 3/8"-16 threaded hole on tripods, monopods, ball heads, tripod heads, light stands, DSLR/SLR camera, camcorders and so on. Features - Color: As shown.- Material: Bronze.- Size: 0.5 x 0.2 x 0.1cm / 0.2 x 0.08 x 0.04inch(LxWxH).- The Screw Adaptor allows you to convert any standard 3/8"-16 thread for the insertion of a standard 1/4"-20 screw.- Made of bronze, solid and durable to use.- for use on tripods, tripod heads, ball heads, monopods, light stands, DSLR/SLR cameras, camcorders and more.Packing list: 5 x 1/4" to 3/8" Camera Tripod Thread Adapter Convert Nut Screw Adapter