Main features:
1. Referring to and modified from Canon original standard design, bearing is enhanced, details are improved, and added the features of quick release plate, more practical;
2. Made of Aviation Aluminum, CNC precisely machined, surface anodic oxidation; integrated structure, built-in anti-skid patch, copper knob, stainless steel anti-skid nails;
3. Weight is about 135g, inner diameter is about 78mm; bottom with quick release plate structure, the plate's length is about 65mm, with 1/4" and 3/8" screw holes;
4. 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.

Compatible with Canon Lens:
EF 70-200mm f/2.8L USM
EF 70-200mm f/2.8L IS USM
EF 70-200mm f/2.8L IS II USM
EF 70-200mm f/2.8L IS III USM
EF 100-400mm f/4.5-5.6L IS USM
EF 35-350mm f/3.5-5.6L USM
EF 300mm f/4L IS USM

Package Includes:
1 x iShoot Tripod Mount Ring IS-C720XB
(Note: The other items in the photos not listed here are for illustrating only, not included)