Specification Brand : Gugxiom BulletPoint1 : Compatibility: Specifically designed for T70‑180F2.8 first generation lens, this tripod mount ring greatly facilitates balance on a tripod and securely fastens heavy lenses, transferring weight away from the camera body. BulletPoint2 : AS Standard: This lens collar features a 70mm quick mounting plate with 1/4in and 3/8in screw holes and for Arca compatible interface, which can be used with a tripod ball head, panoramic ball head, and clamp for optimal compatibility. BulletPoint3 : Fine Craftsmanship: This ring is made of aluminum alloy, and features CNC machining, weight reduction through hollowing, polishing, anodizing on the surface, and an anti skid sticker on the inside to protect your lens from scratches. BulletPoint4 : Versatility: The ring can be mounted on a tripod to provide stable support and balance for heavy telephoto lenses or those extending far from the camera front. Weighing approximately 144 grams, it has an internal diameter of about 80mm. BulletPoint5 : Quick and Easy Installation: With designations on the tripod ring corresponding to those on the lens, simply align the dots and rotate the lens for secure attachment. By adding a collar to your lens you can achieve better balancing on a tripod. Color : Green CpsiaCautionaryStatement : no_warning_applicable Department : Unisex Adult GemType : No Gemstone ItemName : Tripod Mount Ring, CNC Metal Lens Collar for Tamron T70 to 180 F2.8 1st, Built in Arca Type 70mm Quick Release Plate, with 1/4 and 3/8 inch Screw ItemPackageDimensions_Height : 9 centimeters ItemPackageDimensions_Length : 14 centimeters ItemPackageDimensions_Width : 10 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : tripod-lens-mount-rings Manufacturer : Gugxiom Material : Glass MetalType : glass ModelName : Gugxiom3psm24igey ModelNumber : Gugxiom3psm24igey PartNumber : Gugxiom3psm24igey ProductDescription : Specification: Item Type: Tripod Mount Ring Material: Aluminium Alloy Ring Inner Diameter: 80mm / 3.1in Quick Release Plate Length: 70mm / 2.8in