iShoot Metal Lens Collar Tripod Mount Ring Compatible with Tamron 50-400mm f/4.5-6.3 Di III VXD A067, Lens Support Holder Bracket Bottom is Arca-Swiss Fit Quick Release Plate Dovetail Groove

1. The lens collar body adopts the original factory standard, and the structure is redesigned and improved, compatible with Tamron 50-400mm f/4.5-6.3 Di III VXD A067, can't be used for other lenses. 2. The original simple hand screw knob is upgraded to a 180° quick-lock knob. The quick lock device is made of stainless steel, rotate 180° to lock or release, and pull the knob to unlock; the connection shaft of the tripod ring is changed from hollow to solid, the ring body is thickened, and the inner wall is pasted with PVC film to protect the lens. 3. The tripod collar bottom is added 70mm long Arca fit quick release plate feature, compatible with Arca-Swiss 39mm fit tripod ball head, panoramic head and clamp directly; more practical than lens collars without QR-Plate. 4. The Lens support bottom reserved 1/4" and 3/8" screw holes and stainless-steel anti-slip screws for fixing lens to tripod directly. 5. The lens collar can be combined with clamp mount converter IS-3950PRO (Sold Separately), which can be used for hydraulic heads with Manfrotto structure.