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: Black Compatibility: 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 Plate 1 x Opening wrench Only 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.