RAYSUN 2 Pack Camera 3/8 Inch D Shaft D-ring Screw Adapter for Camera Tripod QRS Quick Release Plate - Camera Quick Release Screw 1, Camera quick release D-ring screw - 3/8 Inch; 2, Made of stainless steel; 3, D-ring Design for very easy using; 4, Total length: 16.5mm(including base); Thread length: 6.5mm; No-thread length: 6mm; 5, Package: 2 x quick release D-ring screw.