Excellent for outdoor travel photography, and wedding event where a Stable 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 .8 lens functionality for Multifunction conditions Enhances your photography with this .8 Lens Tripod Collar, a must get accessory for achieving stable and balanced shot Crafted from 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