Feature: 1. IS-EF-EOS R lens tripod bracket ring with quick release plate is suitable for for Canon EF-EOSR lens mount adapter. 2. Using aviation aluminum, CNC precision processing, hollow out to reduce weight, grinding and polishing, anodic oxidation surface, with stainless steel screws. 3. Customized according to mount adapter, can't rotate and depending on switch positioning. The legs are round at the edges and corners to prevent wear. 4. The inner diameter is about 73mm, the width is about 18mm, add quick release plate function, the plate length is about 55mm, with 1/4 inch and 3/8 inch screw holes and stainless steel anti-slip screw. 5. Quick release plate uses AS standard, compatible for RRS/ARCA—SWISS/PMG/WIMBERLEY/MARKINS/PHOTOCLAM/SUNWAYFOTO/BENRO/SIRUI/MARSACE/ISHOOT standard ballhead, apply for IS-JZ30/IS-JZ50/IS-JZ64/IS-QJ58/IS-QJ64-FD/IS-JZ70MFT/IS-JZ80BK/IS-JZ85MFT, etc. Specification: Condition: 100% Brand New Item Type: Lens Tripod Ring Model: IS-EF-EOS R Material: Aluminium Alloy Color: As Pictures Shown Fitment: for Canon EF-EOSR Lens Weight: Approx. 235g Inner Diameter: Approx. 73mm/2.87inch Width: Approx. 18mm/0.71inch Plate Length: Approx. 55mm/2.17inch . Package List: 1 x R Mount Adapter Lens Tripod Ring1 x Internal Hex Wrench