1. Using high-density aviation aluminum, automatic machine , diamond multi-tool heads, hollow carving machining; using vibration polishing technology, the accuracy is 20% higher than manual grinding; using multiple anodization, the metal surface hardness and uniformity are improved by 20%;2. Tailored according to the shape and structure of the lens, the switch function is retained, the tripod ring is closely matched with the lens, and the installation position cannot be pasted.3. The tripod ring adopts an irregular shape, the edges and corners are , and the inner wall uses plastic film to the contact surface; the minimum inner diameter is about 71mm, and the width is about 20mm. There are 1/4 and 3/8 screw holes on the board for expanding the external quick release plate or tripod, and the stainless steel anti-slip screws can be removed.4. The tripod mount ring is attached to a tripod, and it helps you secure and balance a or long-lens telephoto lens hangs on the front of the camera.5. Unique design, can better your camera.Applicable lenses: For Z 105mm F2.8 VR Scolour: blackMaterial: Aluminum AlloyPackage Contents:1 x Tripod Mount RingOnly the above package content, other products are not included.Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.