Desmond DAC-02 60mm QR Clamp 3/8 Inches with 1/4 Inches Adapter and Level Arca Compatible for Tripod Head All Metal (aluminum) Construction No Rubber or Plastic Parts. will accommodate any Arca style plate from various makers including: Really right stuff (RRS), Wimberley, Jobu Design, Arca Swiss, Kirk Enterprises, Markins, etc. 60mm (2.36") in Length. 3/8"-16 thread with metal 1/4"-20 Adapter Includes removable Bubble Level