iShoot Lens Collar Tripod Mount Ring Compatible with Canon EF-EOS R Mount Converter Adapter Ring Basic Model, Lens Support Holder Bracket Bottom is 39mm Arca-Swiss Fit Quick Release Plate Dovetail.

iShoot All Metal Lens Collar Support Tripod Mount Ring ISEOSRPRO for Canon EFEOS R Mount Converter Lens Adapter Ring (Can Only be Used for EFEOS R Basic Models, not for Models with Filters or Focusing RingsSupport Vertical Shoot, Bottom is ARCA Fit Quick Release Plate Feature Compatible with Tripod Head Clamp of 39mm ARCASWISS / RRS Fit Main Features: 1. The tripod mount ring is tailormade for Canon EFEOS R adapter ring, CAN only be used for EFEOS R basic models, not for models with filters or focusing rings; relying on the switch and bayonet positioning, cannot rotate in the tripod ring; when shooting vertically, the EFEOS R adapter ring needs to be taken out and reinstalled; 2. The edges and corners are polished, the inner wall is affixed with 3M plastic film, preventing the lens from scratches; the shortest inner diameter of the lens holder is about 73mm, the width of this contact surface is about 18mm; net weight is about 145g; 3. The tripod collar bottom is added 55mm long Arca fit quick release plate feature, can be used with 39mm Arcaswiss fit tripod ball head, panoramic head and clamp directly; more practical than lens collars without QRPlate; also reserved 1/4 and 3/8 screw holes and stainlesssteel antislip screws for fixing lens to tripod directly. Applicable to: Canon EFEOS R Mount Converter Lens Adapter Ring (Can Only be Used for EFEOS R Basic Models, not for Models with Filters or Focusing Rings, and Cant be used for other lenses, Package Includes: 1 x iShoot Tripod Mount Ring ISEOSRPRO for Canon EFEOS R Mount Converter (Note: The other items in the photos not listed here are for illustrating only, not included.