Wet Stone Cutter Parts Metal Wing Screws Silver Tone 8mm x 20mm 20 Pcs Product Name : Wing Screw;Material : Metal Thread Diameter (Approx.) : 8mm / 5/16";Thread Length(Approx.) : 20mm/ 0.8" Total Size (Approx.) : 31 x 33x 13mm / 1.2" x 1.3" x 0.51" (W*L*D);Color : Silver Tone Weight : 293g Package Content : 20 x Wing Screws