Features: ** CNC Precision Machining, Anodic Surface Treatment, Corrosion Resistance and Wear Resistance. ** It has three 3/8"-16 threaded hole to directly mount the clamp onto a tripod/monopod, and also comes with three 1/4"-20 bushing adapters. ** Build-in bubble level, easy to find correct shooting direction no matter horizontal or vertical shooting. ** Fast loading base with antiskid lock function, protect your camera from falling off. . ** Add 1/4'' conversion thread to be directly connected to the ordinary camera. ** Compatible with any Arca style plate such as, RRS, Wimberley, Jobu Design, Arca Swiss, Kirk Enterprises, Markins, etc. ** Jaw can be opened from 39mm to 43mm. Specifications: ** Material: Aluminum Alloy ** Color: Black ** Size: 120mm x 50mm x 11mm ** Weight: 210g Package included: 1 x 120mm Quick Release Clamp