This is international standard precision made 1/4"to 3/8" Male to Male Threaded Screw Adapter. Suitable for the connecting and converting your dslr configurations from 3/8"-16 female hole to 1/4"-20 male thread( /4"-20 female hole to 3/8"-20 male thread). It is very solid and durable, practical to use. Features - Color: As shown. - Material: Aluminium alloy. - Size: 16 mm x 20 mm(diameter x height). - Easy to use, precision made 1/4"-20 to 3/8"-16 metal screws, silver plated, international standard. - for connecting two photo equipment devices together, such as camera cage, shoulder rig, tripod, monopod, ball head, socket , lighting equipment, LED panel, light stand, action camera and more! - Total length: 20mm /0.79-inch, Diameter: 16mm /0.63-inch. - Made of metal, solid and durable, color is silvery. - Package includes 6 pack of 1/4" to 3/8" male tripod screw adapters. Package list: 1 x set of 6Pcs Standard 1/4"-20 Male to 3/8"-16 Male Threaded Screw Adapter Tripod Screw Converter