Features: Specially designed IS-TA35150 tripod mount ring, for Tamron 35-150mm f2-2.8 Di III VXD A058 E mount lens. 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. Irregular inner wall of the tripod ring, the contact surface is a plastic composite film, which is firmly attached to the lens and supports lens rotation and vertical shooting. 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 dovetail slot is 39mm standard ARCA interface quick release plate, for RRS / ARCA-SWISS tripod for head and adjustment clamp, suitable for IS-JZ30, IS-JZ50, IS-JZ64, IS-QJ58, IS-QJ64-FD, IS-JZ60BK, IS-JZ70MFT, IS-JZ80BK. Specifications: Material: Aluminum Alloy Colour: Black Plate Length: about 50mm/2.16" Applicable Model: for Tamron 35-150mm f2-2.8 Di III VXD A058 E Mount Lenses Note: There should be no stickers on the surface of the lens. If there are stickers, they must be torn off, otherwise the installation will be affected. 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-TA35150 Tripod Mount Ring