Fotasy CL120 Lens Plate Clamp 120mm Long Pro Quick Release Plate Clamp for Tripod Head, Black (CL120) CNC precision machining, surface anode anti-oxidation treatment. Three 1/4" screw holes to meet your different requirements. Built-in spirit level and precision ruler make the photography more precisely. Suit for most camera tripod, monopods, telescopes, ball heads, flash light bracket etc. Compatible With any Arca style plate (Really right stuff (RRS), Wimberley, Job Design, Arca Swiss, Kirk Enterprises, Markins, etc.)