Tripod Mount Ring, iShoot 65.5mm Lens Collar Support for Canon EF 70-200mm f/4L USM / IS USM / IS II USM, 80-200mm f/2.8L, 400mm f/5.6L USM, with Arca-Swiss Quick Release Plate for Tripod Ball Head Main Features: 1. The lens collar is referencing to and modified from Canon original standard design, bearing is enhanced, details are improved, and added the features of quick release plate; 2. High temperature die casting molding of Aluminum alloy, CNC processing, car paint on surface. Built-in 3M film, copper knob and stainless steel anti-skid nails; 3. The net weight of this lens support bracket is about 135g, inner diameter is about 65.5mm, width is about 18mm; split-structure, bottom is 60mm length quick release plate, with 1/4" and 3/8" screw holes; 4. The lens holder bottom is 39mm Arca-Swiss fit Quick Release Plate, Compatible with RRS / ARCA-SWISS / WIMBERLEY / PMG / SUNWAYFOTO / BENRO / SIRUI / MARSACE / ISHOOT tripod 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. Applicable to: Canon EF 70-200mm f/4L USM Canon EF 70-200mm f/4L IS USM Canon EF 70-200mm f/4L IS II USM Canon EF 400mm f/5.6L USM Canon EF 80-200mm f/2.8L Package Includes: 1 x iShoot Tripod Mount Ring IS-C720XXB (The other items in the photos not listed here are for illustrating only, not included)