Features:1. The tripod mount ring is designed and improved according to original factory parameters; only compatible with Z 180-600mm F5.6-6.3 VR Lens, NOT compatible with other lenses; 2. The tripod collar bottom is added 105mm long Arca fit quick release plate feature, can be used with 39mm Arca-Swiss fit tripod head and clamp directly, more practical than lens collars without QR-Plate; 3. The quick release plate is added wavy finger positions; also reserved 1/4 inch and 3/8 inch screw holes and stainless-steel anti-slip screws for fixing lens to tripod directly. 4. The inner wall of the tripod ring is pasted with a layer of PVC film, and the lens ring body adopts a split structure, loosen the knob, and pull it out to unlock 5. The tripod ring is installed in the same way as the original factory, and supports rotating vertical shooting; When rotating for vertical shooting, loosen the knob completely; there is a vertical focus point on the ring; 6. The tripod ring is tightly combined with the lens, and there should be no stickers at the installation position. If there is, it should be removed, otherwise it will affect the installation; 7. The lens collar IS-Z1860 can be combined with clamp mount converter IS-3950PRO (Sold Separately), which can be used for fluid heads and stabilizers with Manfrotto 50 structure; 8. The tripod ring is made of Aviation Aluminum, CNC precisely machined, hollow-out weight reduction design, polished and surface anodized finish. The appearance and exquisite workmanship are much better than similar products made by mold. Compatible with: Only for Nikon Nikkor Z 180-600mm F5.6-6.3 VR Lens iShoot Lens Collar Tripod Mount Ring Support for Nikon Nikkor Z 180-600mm F5.6-6.3 VR with Arca-Swiss Quick Release Plate IS-Z1860 iShoot Lens Collar Tripod Mount Ring IS-Z1860 --- Support Vertical Shoot Compatible with for Nikon Z 180-600mm F5.6-6.3 VR Bottom is 39mm Arca Fit Quick Release Plate Feature Compatible with ARCA-SWISS Fit Tripod Head Clamp &