The Really Right Stuff Mk2 Series 2 Carbon Fiber Threaded Tripod Leg Cap is a precision-machined accessory designed to add threaded mounting points to Series 2 tripod legs. Made from durable 6061-T6 aluminum with a black anodized finish, it features a 3/8"-16 female main thread, two 1/4"-20 accessory threads, and an anti-twist slot to keep attachments stable. The leg cap measures 0.69 in in height, 1.81 in in length, 1.75 in in width, and weighs 1.3 oz. The package includes Series 2 threaded tripod leg collar, 2.5 mm hex key, 4×M3 cap-head screws, limited 5-year manufacturer warranty. This accessory is compatible with RRS Series 2 tripods and allows photographers to mount heads, clamps, or other accessories on their tripod legs.