iShoot All-metal 2D 360&deg; Tripod Panning Clamp Head Compatible with RRS / Arca-swiss / Kirk As Standard Quick Release Plate Made of aviation aluminum and 304 stainless steel; CNC precision machining, surface oxidation treatment and electroplating; weight only about 440g, the maximum load is 12kg Built-in 1/4"-3/8" adapter screw in the bottom, the thread depth is about 20mm, can be used with tripods or light stands with 1/4" or 3/8" screw head Bottom is panoramic design, can rotate 360 freely Waist using a large locking knob, stainless steel axis, with damping, precision scale, can be adjusted within 95 in positive and negative directions Ultra-slim clamp with AS standard interface, compatible with RRS / ARCA-SWISS / KIRK / Wimberley / MARKINS / SUNWAYFOTO / kangrinpoche / BENRO / SIRUI quick release plate of AS interface