camera screw, 22 pcs tripod screw adapter converter ring screw pack(1/4" male to 1/4" male, 1/4" male to 3/8" male,1/4" female to 3/8" male,1/4" female to 3/8" female,2 pcs1/4 d-ring screw) muscccm <p><b>this is international standard precision made 1/4"to 3/8" threaded screw adapter.</b> <p><b>material: aluminium alloy and stainless steel (metal)</b> <p><b>22 pcs camera screws pack:</b> <br>5 pieces 1/ 4 inch to 3/ 8 inch male threaded screw adapter <br>5 pieces 1/ 4 inch to 1/ 4 inch male threaded screw adapter <br>5 pieces 1/4" female to 3/8" female screw adapter <br>5 pieces 1/4 inch female to 3/8 inch male screw adapter <br>2 pcs d-ring screws