About this item

• Suitable for Sigma APO 70-200mm F2.8 II EX DG MACRO HSM Zoom Lens
• 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 by metal with high quality and strong building.
• The UNC (Unified National Coarse Thread) is 1/4"
• Ring diameter: 71mm; Ring thickness: 4.5mm