About this item

• 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.
• 100% fits Sigma and does have same construction.
• Made by metal with very high quality
• The UNC (Unified National Coarse Thread) is 1/4"
• Suitable For: SIGMA APO 70-200mm F2.8 II EX DG MACRO HSM