iShoot Metal Camera Tripod Mount Tripod Mount Lens Support Lens Bracket Tripod Socket for Sigma DG DN OS Sigma 105mm DG HSM Quick Release Plate with

1. The tripod collar ring has been designed and improved based on Sigma's original TS-111. The lens support collar is customized for the Sigma 100-400mm f/5-6.3 DG DN OS (E-mount) and Sigma 105mm f/1.4 DG HSM Art (EF/FX/FE/L-mount). It is not compatible with the Sigma 100-400mm f/5-6.3 DG OS HSM Contemporary (EF/F Mount) lens or other lenses. 2. The tripod mount ring weighs approximately 170g, has an inner diameter of approximately 82mm, a width of approximately 18mm, has grooves and notches on the inner wall, and is covered with a 3M plastic protective film. It also features a non-slip locking knob. 3. The bottom of the tripod collar now features a 65mm long Arca Fit quick release plate, which can be directly used with 39mm Arca Swiss Fit tripod ball heads, panoramic heads, and clamps, making it more practical than lens support collars without dovetails. 4. The bottom of the lens support collar has 1/4 inch and 3/8 inch screw holes and a stainless steel anti-slip screw for directly fixing the lens to a tripod. 5. The tripod ring is made of aviation aluminum, CNC precisely machined, hollowed out lightweight design, polished and anodized surface finish. The appearance and exquisite workmanship are far superior to similar products made by mold.