iShoot Lens Collar Tripod Mount Ring IS-Z50 Compatible with Nikon Z 50mm f/1.2 S Lens Bottom is 39mm ARCA Fit Quick Release Plate Feature? Compatible with Tripod Head & Clamp of RRS / ARCA-SWISS Fit Main features: 1. The tripod mount ring is tailor-made and compatible with Nikon Z 50mm f/1.2 S Lens, avoiding the display screen and switches, and can only shoot horizontally, not vertically, can?t rotate either. This lens collar can't be used for other lenses? 2. The corners of the tripod ring are polished, the inner wall is made of 3M plastic film, preventing the lens from scratches; the inner diameter is about 72mm, the width is about 20mm; net weight is about 145g? 3. The tripod collar bottom is added 50mm long Arca fit quick release plate feature, can be used with 39mm Arca-swiss fit tripod ball head, panoramic head and clamp directly; more practical than lens collars without QR-Plate; also reserved 1/4" and 3/8" screw holes and stainless-steel anti-slip screws for fixing lens to tripod directly? 4. This lens support bottom's dovetail groove is 39mm Arca-Swiss standard, compatible with RRS / ARCA-SWISS / PMG / WIMBERLEY / MARKINS / PHOTOCLAM / SUNWAYFOTO / BENRO / SIRUI / MARSACE / ISHOOT ball head of Arca 39mm fit, suitable for iShoot IS-JZ30 / IS-JZ50 / IS-JZ64 / IS-QJ58 / IS-QJ64-FD / IS-JZ60BK / IS-JZ70MFT / IS-JZ80BK; 5. The tripod mount ring IS-Z50 + IS-3950MFT clamp converter (sold separately), can be compatible with Manfrotto hydraulic heads. Compatible with: Nikon Z 50mm f/1.2 S Lens Can't be used for other lenses Package Includes: 1 x iShoot Tripod Mount Ring IS-Z50 Compatible with Nikon Z 50mm f/1.2 S Lens (Note: The other items in the photos not listed here are for illustrating only, not included)