Model: Ring C (WII) fat white special tripod ring
Applicable lens: EF 70-300mm f / 4-5.6L IS USM (fat white)
Material: imported aluminum (aluminum can reduce weight by weight)
Ring diameter: about 81mm (not originally used that section 28-300， the old CW， an inner diameter of 80mm， with the 70-300 on tight.)
Origin: China
Description: precision machining， plating paint， interior flocking
Specifically for the Canon EF 70-300mm f / 4-5.6L IS USM lens tailored， work well!

Working with large telephoto lens and enhanced attachment stability when using a tripod to shoot. Mounted on the barrel， tripod socket tripod mount ring through the bottom of the lens mounted on a tripod. In addition， just relax rotating tripod mounting for locking knob can rotate the camera lens to the center， do not tilt head can also switch the vertical and horizontal composition.