Features: Tailor-designed IS-SL730 tripod mount ring, for Panasonic for Lumix S 70-300 f/4.5-5.6 Macro OIS lens, it retains the switch function The corners of the tripod adapter ring are polished, and the surface which contacts the lens is fixed with plastic film, preventing the lens from being scratche. Plate length is about 50mm, built-in camera quick release plate for tripod for head, equipped with 1/4" and 3/8" screw holes, allows you to fix the lens to the tripod directly. Bottom is 39mm standard RRS interface quick release plate, for RRS/ ARCA-SWISS/ WIMBERLEY MARKINS/ PHOTOCLAM/ SUNWAYFOTO / BENRO tripod ballhead, pan for head and clamp. Made of aviation aluminum material, precision CNC machining, lightweight hollow design, polished and anodized finish on the surface, exquisite workmanship and durable for long service life. Specifications: Material: Aluminum Alloy Lens Inner Diameter: about 74.5mm, width: about 22.5mm Plate Length: about 50mm/2.16" Applicable Model: for Panasonic for Lumix S 70-300 f/4.5-5.6 Macro OIS Lens Note: After installation, it only supports horizontal shooting, does not support vertical shooting, and the tripod ring cannot rotate. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1 Piece IS-SL730 Tripod Mount Ring