| Specification KCP-150 / Swiveling Pipe C Clamp Weight: 2.1kg Working Load Limit: 15kg (16mm stud) / 80kg (28mm receiver) Swiveling Pipe C Clamp with Universal Head. KCP-151 / Ratcheting Jaw C Clamp Weight: 1.2kg Working Load Limit: 110kg Ratcheting Jaw C Clamp With M12 Bolt & Nut. It comes with M12 hex nut and wing nut together for more security (applicable to KCP-151).