Feature Clamping Range from 35-65mm(1.4-2.5 in), Compatible with Most Rifles 1/4&';&';- 20 Thread Bushing, 3/8&';&';-16 Thread &1/4&';&'; Latch Adapters, Can Fit Most Tripod Oversized Twist-Lock Knob Offers Quick and Effortless Installation, Unparalleled Stability Specification Materials: Aluminum Alloy Dimensions: 86x90x59 mm / 3.39x3.54x2.32 in Clamp Width: 35-65 mm / 1.4-2.5 in Color: Black Weight(net): 435 g / 15.3 oz Items in the Package: 1/4&';&';- 20 Thread Bushing, 3/8&';&';-16 Thread &1/4&';&'; Latch Adapters. Video Youtube Video Link