1. Suitable for EF 70-200mm f/4L USM, for EF 70-200mm f/4L IS USM, for EF 300mm f/4L USM, for EF 400mm f/5.6L USM.
2. Aluminum alloy construction, anti-rust and lightweight, durable to use.
3. Easy to install with a fixing screw stud and convenient to use.
4. It helps you fix and balance your tele lens which is heavy or long hanging off the front of camera.
5. Nice accessory for photography lovers, bringing you better experiences.

Specification:
Features:
Suitable for EF 70-200mm f/4L USM, for EF 70-200mm f/4L IS USM, for EF 300mm f/4L USM, for EF 400mm f/5.6L USM.
Aluminum alloy construction, anti-rust and lightweight, durable to use.
Easy to install with a fixing screw stud and convenient to use.
It helps you fix and balance your tele lens which is heavy or long hanging off the front of camera.
Nice accessory for photography lovers, bringing you better experiences.
Specification:
Condition: 100% Brand New
Material: Aluminum Alloy
Color: Shown as pictures
Base Mount Interface: UNC 1/4inch
Diameter: Approx. 7cm / 2.7in
Inner Diameter: Approx. 6.5cm / 2.5in
Weight: Approx. 122g
Packing List:
1 * Lens Tripod Mount Ring
Other devices on pictures are not included.