compatible with Arca-Swiss stardard, both the base plate and vertical plate are 100% compatible with RRS lever-release clamp features a detachable design, the base plate and vertical plate can be easily disassembled and assembled to fit different experience.color: BlackCompatibility:Starndard Arca-Swiss dovetails, compatible with Arca Swiss, RRS, kirk, Wimberley, Markins, , , , ... with AS stardard. Material & Workmanship:Aluminum, machined by precision CNC and surface processed with hard anodized oxidation treatment.very smooth surface, scratch resistant.Package Included:1 x Quick Release Plate1 x Opening wrenchOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.