Mudder 1/4 Inch Male to 1/4 inch Male Screw 1/4 Inch Male to 3/8 Inch Male Threaded Screw Adapter for Camera/Tripod/ Monopod/Ballhead/ Light Stand (4 Pieces) Precision made 1/ 4 inch to 1/ 4 inch male to male screw adapter, 1/ 4 inch to 3/ 8 inch male to male screw adapter, easy to use Can putting two photo equipment devices together The length is 20 mm, and the width is 16 mm Made of metal, color is silvery Package includes 2 pieces of 1/ 4 inch to 1/ 4 inch screws and 2 pieces 1/ 4 inch male to 3/ 8 inch screws, 1 * cleaning cloth