Features: Specially designed IS-Z50 tripod mount ring for the Z 50mm f/1.2 S lens. It only supports horizontal shooting, not vertical, and cannot rotate. The corners of the tripod ring are polished, with a plastic film inner wall, preventing the lens from scratching. The plate length is about 50mm, built-in camera quick-release plate for tripod heads, equipped with 1/4" and 3/8" screw holes, allowing you to attach the lens to the tripod directly. The bottom is a 39mm standard RRS interface quick-release plate, for RRS / ARCA-SWISS / KIRK / WIMBERLEY / MARKINS / SUNWAYFOTO / BENRO tripod ball head, panoramic head, and clamp. Made of aviation aluminum material, precision CNC machining, lightweight hollow design, polished and anodized surface finish, exquisite workmanship, and durable for a long lifespan. Specifications: Material: aluminum alloy Color: Black Lens inner diameter: approx. 72mm, width: approx. 20mm Plate length: approx. 50mm/2.16" Applicable model: for Z 50mm f/1.2 S lens Note: Please allow 0-1cm error due to manual measurement. Make sure you don't mind before ordering. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1 piece IS-Z50 tripod mount ring for Z 50mm F1.2 S lens