1/4" to 3/8" convert screw 5 pack (3 different lengths adapter set) Desmond Camera Tripod Bushings Desmond Brand, 100% metal adapters 5 Piece Set, 3 different lengths: 1 short 4.8mm, 2 med. 8mm, 2 tall 10.5mm Use to convert a 1/4" threaded post to a 3/8" and to convert a 3/8" thread socket to a 1/4" 1/4" female (internal) thread and 3/8" male (external) thread Screwdriver slot for removal