Neewer Universal Black Metal 1/4" Screw Mount L Plate Quick Release Fits Arca-Swiss Standard Compatible for Canon Nikon Olympus Pentax and Other Digital SLR Camera and Tripod Head Material: Aluminium Alloy Color: Matt Black Net Weight: 3.2 oz Compatibility: Arca-Swiss Standard Mounting Screw Diameter: 1/4" (the screw size that connecting the L plate and the camera)