Haoge Ring Tripod Socket for SIGMA F4 zoom lens Arca Swiss plate head compatible Replaces SIGMA LMR-SM31 50-500mm f4.5-6.3, 50-500mm F4-6.3, 80-400mm

[About clocks that synchronize time via radio waves] The function of clocks that synchronize time via radio waves only works in the Japanese area. Please be careful. Haoge's LMR-SM31 tripod mount ring replaces SIGMA TS-31. Arca-Swiss Features an Arca-compatible dovetail that allows the lens to be attached to Arca-Swiss plate standard ball heads, clamps, or panoramic heads. The 1/4" and 3/8" screw holes on the bottom allow you to attach the lens directly to a tripod. Comes with a strap hole for carrying Haoge's LMR-SM31 tripod mount ring is designed for Sigma 50-500mm, 80-400mm, 120-300mm, 120-400mm, 150-500mm lenses. It features an Arca-compatible dovetail that allows the lens to be attached to Arca-Swiss standard ball heads, clamps, and panoramic heads. 1/4" and 3/8" screw holes on the bottom allow you to attach the lens directly to a tripod. Comes with a strap hole for carrying. Quick release system. Designed with arca compatible dovetail for quick camera and lens setup. Improves lens balance. A ring secures the lens to the camera tripod. The thumbscrew allows you to tighten or loosen the ring. Thumbscrew control of the ring makes it easy to adjust the tripod ring on the go. Make your camera setup more balanced. This ring provides stability to the camera and lens. That weight shifts the center of gravity to the lens if it is attached to the camera on a tripod. The ring attaches to the tripod and can be shifted to adjust balance. Compatible models: Sigma APO 50-500mm F4.5-6.3 DG OS HSM Lens Sigma APO 50-500mm F4-6.3 EX DG HSM Lens Sigma APO 50-500mm F4-6.3 EX RF HSM Lens Sigma APO 80-400mm F4.5-5.6 EX OS Lens Sigma APO 80-400mm F4.5-5.6 EX DG OS Lens Sigma APO 120-300mm F2.8 EX DG OS HSM Lens Sigma APO 120-400mm F4.5-5.6 DG OS HSM Lens Sigma APO 150-500mm F5-6.3 DG OS HSM Lens (Note: Cannot be used with other lenses). Package contents: 1 x Haoge LMR-SM31 Tripod Mount Ring for Sigma Lens