The Really Right Stuff Mk2 Series 1 Carbon Fiber Threaded Tripod Leg Cap is a precision-machined accessory designed to add threaded mounting points to Series 1 tripod legs. Crafted from durable 6061‑T6 aluminum with a black anodized finish, the leg cap features a 3/8″‑16 female main thread and two 1/4″‑20 accessory threads, along with an anti-twist slot to keep attachments stable. It measures approximately 0.69in in height, 1.59in in length, 1.65in in width, and weighs about 1.2oz. The package includes the threaded tripod leg collar, a 2.5mm hex key, four M3 stainless steel cap-head screws, and a user’s guide. This accessory is compatible with RRS Series 1 tripods and allows photographers to easily mount heads, clamps, or other accessories on their tripod legs.