Features: Enhances your photography experience with this F2.8 Lens Tripod Collar, a must get accessory for achieving stable and balanced shot. Crafted from high quality aluminum , this tripod collar features a 71mm or 82mm rings diameter and a 4.5mm thickness, designs to secure your lens firmly. Suitable for photography enthusiasts and professional photographers who demand precisions and stability in their work. Excellent for outdoor shoot, travel photography, and wedding event where a steady hand is essential for capturing those unforgettable moment. The tripod mount rings with its standard 1/4inch threading easily attaches to tripods, enhancing this 70 200mm F2.8 HSM lens functionality for Multifunction Shoot conditions. Specifications: Material: aluminum Size: as picture showns Package Includes: 1xTripod Collar note: Please allow 1 to 3cm error due to manual measurement, please make sure you do not mind before you bid, Due to the differences between different monitors, the picture may not reflect the actual colorful of the item.