Foto4easy 71mm Tripod Collar Mount Ring for Sigma APO 70-200mm F2.8 II EX DG Macro HSM

Suitable for: SIGMA APO 70-200mm F2.8 II EX DG MACRO HSM. The bottom of the lens ring is an 60mm quick release plate with 1/4" and 3/8" screw holes Compatible with Arca-Swiss tripod ball head, panoramic head and clamp. The tripod mount ring mount on the tripod, it helps you fix and balance your tele lens which is heavy or long lens hanging off the front of camera. Made of aviation aluminum materials, CNC precision machining,built-in non-slip patch to protects your lens. The net weight of the tripod mount ring is about 131g, inner diameter is about 70.5mm, width is about 18mm.