1. Compatibility: Specifically designed to fit for EF 100 to 400mm f/4.5 to 5.6L IS II lens. This ensures stable support and optimized handling experience for good photographic performance.
2. Quick Installation and Removal: Features a base design that seamlessly integrates with mainstream tripods, ball heads, and Arrow Storage Case​ plates. Enables fast mounting or dismounting and efficient equipment transitions.
3. Easy Installation System: Equipped with a standard 1/4 inch screw and 1/4 inch 3/8 inch threaded holes for broad accessory compatibility. The pre drilled Arrow Storage Case​ holes accommodate various mounting needs, significantly enhancing photographic flexibility.
4. Anti Slip Pad: Incorporates high strength anti slip rubber pads to prevent shaking and scratches on lens. This protective design ensures lens stability and security across diverse scenarios.
5. Lightweight Yet Sturdy: Constructed from CNC machined aluminum alloy using integrated forming technology for exceptional pressure proof and abrasion proof capacities. The lightweight portable design makes it an ideal solution for outdoor photography and telephoto support.

Specification:
Item Type: Tripod Mount Collar Base
Material: Aluminum Alloy
Applicable Lens: Fit for EF 100-400mm f4.5-5.6L IS II

How to Use:
Install and use.

packing list:
1 x Tripod Mount Collar Base