Desmond 10 x 1/4" to 3/8" Camera Tripod Bushing Adapter Desmond Brand. 100% metal. 10 Pack Use to convert a 1/4"-20 threaded post to a 3/8"-16 or to convert a 3/8"-16 thread socket to a 1/4"-20. Screwdriver slot for removal. 9mm in height. 1/4" metal male thread and 1/4" metal female socket.