General description Lightweight and strong, the NEW Long 1/4' D-Ring Screw is designed for connecting various types of DC and DV devices. It is commonly used with cameras, camera tripod release plates, and tripod screws. Technical specifications Material: Stainless Steel Color: Silver Total Length: 21mm Shaft Length: 17mm (including thread) Diameter: 12mm (without D-ring) Diameter: 16mm (with D-ring) Thickness: 4mm Package Includes: 10x 1/4 Stainless Steel Tripod QR Plate Screw Measurement allowed error: +/- 1-3 cm