Feature●Box contents: 25 pieces 1/4 inch different long screws included keys●Size:5pcs 1/4-20*5/8, 5pcs 1/4-20*3/4, 5pcs 1/4-20*5/16, 5pcs 1/4-20*1/2, 5pcs 1/4-20*1/2, 5pcs 1/4-20*1●Purposes: 1/4 inch hex screw standard and all camera accessories for camera mount and tripod mounting●Thread length: screws 1/4 inch (5 x 7.9 mm / 5 x 12.7 mm / 5 x 15.88 mm / 5 x 19.05 mm / 5 x 25.4 mm thread)●High Quality The hex screw is made of 304 stainless steel, with clear threads and is not easy to rustDescription