- Fully Arca & RRS Lever Clamp compatible - Precision CNC machined from solid aircraft-grade aluminum - Full Access to all side ports Specification: - Compatible with Arca-Swiss stardard, both the base plate and vertical plate are 100% compatible with RRS lever-release clamp! - It features a detachable design,the base plate and vertical plate can be easily disassembled and assembled to fit different shooting experience. - The base plate will not affect battery compartment lid opening and the data cables hatch opening. - The base plate has reserved extra 1/4" -20 threaded mounting holes and strap hole for additional functions. Package - 1 x Base Plate - Screw and Wrench.