Feature :

Tripod Mount Ring for Canon EF 70-200mm f/4L USM Lens
Product Information
This tripod mount ring is made by high quality metal.It mounts on the tripod, help you fix and balance your heavy or long telephoto lens hanging off the front of camera.
The main feature
--Minimum inner ring diameter: 65mm(+/- 1mm)
--Ring thickness: 4mm;
--1/4 UNC (Unified National Coarse Thread).

for Canon Lens
EF 80-200mm f/2.8L USM
EF 70-200mm f/4L USM
EF 200mm f/2.8L USM
EF 300mm f/4L
EF 400mm f/5.6L USM

Package :

1 x Tripod Mount Ring