Lens Collar Foot Stand Holder|Material: Aluminum Alloy:Crafted from aluminum alloy, this lens collar ensures long-lasting stability for your lens. Compatibility: for 600mm 800mm F11 Telephoto Lens:Designed specifically for the 600mm 800mm F11 lens, ensuring a and secure attachment. Tripod Mount: 38mm Arca-:Features a 38mm Arca- tripod mount, allowing for seamless integration with various tripod heads. Versatility: 1/4 inch Screw, 1/4 and 3/8 Threaded Hole:Equipped with a 1/4 inch screw and 1/4 and 3/8 threaded holes for versatile mounting options. : 73g:At just 73g, this lens collar adds minimal weight to your camera setup, enhancing portability. 1. with 1/4 Screw, 1/4 and 3/8 Threaded Hole, Locating Pin 2. Attaches directly to the 38mm tripod head mount. 3. Base plate with 1/4 and 3/8 threaded holes for attaching tripods and quick release plates Color: Black Material: Aluminum Alloy Package Contents: 1 x Lens Tripod Replacement Base Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.