Specifications:
Features:
Fits Canon EF 70-200mm f/4L USM, Canon EF 70-200mm f/4L IS USM, Canon EF 300mm f/4L USM, Canon EF 400mm f/5.6 LUSM
Aluminum alloy construction, anti-rust, lightweight and durable.
Helps to fix and balance heavy or long telephoto lenses hanging in front of the camera.
Specifications:
Material: Aluminum Alloy
Base Mount Interface: UNC 1/4"
Diameter: Approx. 2.7 inches (7 cm).
Inner Diameter: Approx. 2.5 inches (6.5 cm).
Weight: Approx. 4.2 oz (122
Packing List:
1 x Lens Tripod Mount Ring
Other devices in the picture are not included.