Features: Disc clamp, 3/8 screw hole on the bottom. Built-in spirit level. Jaw opening range can be adjusted from 37mm to 42mm. Will accommodate any Arca style plate, such as (Rrs), for Wimberley, for Jobu Design, for Arca Swiss, for Kirk Enterprises, for Markins, etc. Pu-70 universal quick release plate with 1/4 screw mount, 69mm/length, 38mm/width, 10mm/height. With the help of 1/4 female-3/8 male screw(included), it can be directly mounted onto any ball head, tripod, gimbal and monopod. Made of aircraft-grade aluminum, CNC precision machining, surface oxidation treatment.