Arca-Swiss Style Clamp with Swivel Pin All-metal, CNC-machined, oxidized finish Arca-rail adapter with a bipod-style swivel pin. Features a 3/8-16 threaded hole for direct mounting to a tripod/monopod, and includes a 1/4-20 adapter. Bipod-style swivel pin Arca-rail adapter, quick release base with non-slip locking function. Clamp, quick release plate, adds a 1/4'' conversion thread for direct connection to a standard camera. Integrated and adjustable. Specifications: 100% Brand New and High Quality! All-metal, CNC precision machining, surface oxidation. Features a 3/8-16 threaded hole for direct mounting to a tripod/monopod, and includes a 1/4-20 socket adapter. Quick release base with non-slip locking function. Adds a 1/4'' conversion thread for direct connection to a standard camera. Built-in bubble level and precision ruler. Jaw opens from 37mm to 42mm. Compatible with all Arca-Swiss style plates, such as RRS, ARCA-SWISS, KIRK, Wimberley, MARKINS, SUNWAYFOTO, kangrinpoche, BENRO, SIRUI, etc. Specifications: Material: Metal Color: Black Item Size: 50 * 12mm (Diameter x Thickness) Package Includes: 1x Clamp for Q50 Quick Release Plate