PU50 Quick Release Plate for Benro B0 B1 B2 J0 J1 Ballhead Arca Swiss Material: Metal Alloy Color: Matt Black Thickness: 10mm (universal thickness of Arca-Swiss Standard QR plates) Mounting Screw Diameter: 1/4" (the screw size that connecting the QR plate and camera) Compatibility: Arca-Swiss Standard