iShoot C730PB Tripod Mount Ring for Canon 28-300 f/3.5-5.6L IS USM, EF 70-300mm f/4-5.6L IS USM Lens features an RRS/Arca-Swiss fit quick release plate.

Features:

Made of Aviation Aluminum, CNC precisely machined, surface anodic oxidation, with stainless steel screw, lightweight design of hollow, weighs about 165g;
Referring to and modified from Sony original standard design, bearing is enhanced, details are improved, and added the features of finger position and quick release plate, more practical; tripod ring diameter is about 80mm, the use of embedded PP material to increase the damping; accurate bayonet, same to the original one, easy to quickly disassemble and adjust the body composition; tripod ring comes with quick-release plate structure, with 1/4" and 3/8" screw holes;
Quick release plate is AS 39mm standard, compatible with RRS / ARCA-SWISS / KIRK / WIMBERLEY / MARKINS / SUNWAYFOTO / KANGRINPOCHE / BENRO / SIRUI / MARSACE / ISHOOT ball head of Arca 39mm fit, suitable for IS-JZ30 / IS-JZ50 / IS- JZ64 / IS-QJ58 / IS-QJ64 / IS-JZ60BK / IS-JZ70MFT / IS-JZ80BK.

Applicable to below Canon Lens:

EF 28-300mm f/3.5-5.6L IS USM
EF 70-300mm f/4-5.6L IS USM
Replaces the original Canon C (WII) tripod collar
Not suitable for other lenses.

Package Content:

iShoot C730PB Tripod Mount Ring for Canon 28-300 f/3.5-5.6L IS USM, EF 70-300mm f/4-5.6L IS USM Lens x 1
(The other items in the photos not listed here are for illustrating only, not included)

iShoot IS-C730PB Tripod Mount Ring for Canon 28-300 f/3.5-5.6L IS USM Lens