Replaces A-2 and AII (WII) Tripod RIng, compatible with Canon EF 70-200mm f/4L lens; Canon EF 70-200mm f/4L IS lens; Canon EF 70-200mm f/4L IS II USM lens
Silicone pad on the inside Also can protect your Lens from unwanted scratches
Made of Premium ABS material Sturdy and durable
Attach to a tripod or monopod via the 1/4"-20 tripod socket on the bottom