Features 1、Rugged Construction: Crafted from aircraft grade aluminum alloy material and CNC fine machining, the lens tripod mount ring collar is sturdy, rugged, and erosion resistant, ensuring long lasting performance. 2、Protective Contacting Surfaces: The tripod mount ring is designed with a protective contacting surfaces to prevent wear on the lens surfaces when installed correctly. It allows for casual rotation similar to the original tripod ring after installation. 3、Multifunctional: The lens collar tripod mount is multifunctional, which can be installed on a tripod to securely and balance heavy or long lenses mounted in front of the camera, providing stability during photography. 4、Quick Release Plate Design: The bottom of the lens collar tripod features an 80mm quick release plate with 1/4 inch and 3/8 inch screw holes, ensuring compatibility with for Arca tripod ball heads, panoramic heads, and clamps, which is very convenient. 5、Good Compatibility: The lens ring tripod has good compatibility, and is compatible with for FE 24‑240mm f 3.5‑6.3 OSS, for 24‑105mm f 4 G OSS, for 16‑35mm f 2.8 GM, for 24‑70mm f 2.8 GM, for 35mm f 1.4 ZA, for 50mm f 1.4 ZA, for 85mm f 1.4 GM, etc. Specification Item Type: Lens Ring Tripod Material: Aluminum Alloy Connection Hole Type: 1/4 Inch Thread, 3/8 Inch Thread Applicable Lens: for FE 24-240mm f 3.5-6.3 OSS, for 24-105mm f 4 G OSS, for 16-35mm f 2.8 GM, for 24-70mm f 2.8 GM, for 35mm f 1.4 ZA, for 50mm f 1.4 ZA, for 85mm f 1.4 GM, etc. Ring Size: Inner Diameter: 61.5mm / 2.42in, Width: 15mm / 0.59in (2MM Error) Package List 1 x Lens Ring 1 x L Shaped Hex Wrench