Haoge Lens Collar Foot Tripod Mount Ring for Sigma 50-500mm f4.5-6.3 , 120-300mm f2.8 APO EX DG HSM, 120-400mm f4.5-5.6 APO DG OS HSM, 150-500mm f5-6.3 Lens built-in Arca Plate Replace Sigma TS-31

The LMR-SM31 Tripod Mount Ring from Haoge is designed for Sigma 50-500mm f/4.5-6.3 APO DG OS HSM,  120-300mm f/2.8 APO EX DG HSM, 120-400mm f/4.5-5.6 APO DG OS HSM and 150-500mm f/5-6.3 APO DG OS HSM Lens. It features Arca-compatible dovetail which allow you attach your lens to Ball Head, Clamp or Panorama Head of Arca-Swiss standard. Reserved 1/4" and 3/8" screw holes at the bottom for attach lens to tripod directly. Built-in strap hole for carry.

Quick Release System
Designed with Arca-compatible dovetail, photographer could set up camera and lens quickly.

Improves Lens Balance
The ring secures your lens to the camera's tripod.

Thumbscrews Tighten And Loosen Ring
Having thumbscrews control the ring make it easy to adjust the tripod ring on the go.

Gives Your Camera Setup Better Balance
The ring adds stability to your camera and lens. Due to its weight, when the lens is mounted with a camera on a tripod, the center of gravity is shifted to the lens. The ring attaches to the tripod and can be shifted to adjust the balance.

Compatible with:
Sigma 50-500mm f/4.5-6.3 APO DG OS HSM Lens
Sigma 120-300mm f/2.8 APO EX DG HSM Lens
Sigma 120-400mm f/4.5-5.6 APO DG OS HSM Lens
Sigma 150-500mm f/5-6.3 APO DG OS HSM Lens
( Note: it can't be used for other lenses )

Package Included:
1 x Haoge LMR-SM31 Tripod Mount Ring for Sigma Lens