Neewer Aluminium 50mm Quick Release Plate QR Clamp 3/8-inch with 1/4-inch Adapter and Built-in Bubble Level for Benro Acratech Kirk Wimberley Gitzo Manfrotto RRS Arca Swiss and Other Arca-Style Quick Release Plate 5mm(1.97") in length (accepts plates of any length securely) Adapter jaws will accept plates from 38-42mm wide Arca Swiss Fitting (allowing for newer style plates with security screws) Include built in Bubble level Made from durable anodised aluminium