ITEM NAME:2xBlack Aluminum Alloy Quick Release QR Plate Adapter with 1/4''-3/8'' Screw and Description: Quick release board security lock: 323 release board plate design using Locking lever and locking pin make it a dual-lock system,further guarantee the locking in case of accidental slip. Anti-slip rubber pad quick release plate design, durable rubber pad to stop camera slips, reduce the wear on the bottom of the camera. Screwless designed D-Ring to attach & detach quickly from your camera. Mount your camera on a tripod, monopod, slide rail and rocker arm easily with this quick release plate. Built-in spirit bubble level for easy positioning. Specification: Material: Aluminum Alloy Size: 7.3×6.5×2.2 cm/2.8×2.5×0.8 inch Package Includes: 2 Pieces Quick Release Adapters with Plate Note: Please allow a slightly errors due to manual measurement. SKU: ALU0025239019435216.Built-in spirit bubble level for easy positioning. Material: Aluminum Alloy. 2 Pieces Quick Release Adapters with Plate. People always bought together with.