Screw: 1/4" Material: stainless steel Weight: 10g Length: 14mm Head diameter: 12mm Flat washer: 2mm thick These excellent quality stainless captive screws allow the fitment of different styles of plates to fit directly into the base of your camera equipment. 2. Can be used with camera tripods, monopods, telescopes, ball heads, and quick release plate etc. 3. Ideal for Manfrotto / Arca Swiss / Gitzo / Acratech / Kirk /Sirui etc AS standard quick plates. 4. All-metal material which makes it durable and wear. 5. Use Flat Washer to compensate the Length required.