iShoot Lens Tripod Mount Ring for Sigma 40mm f/1.4 DG HSM Art Lens, CNC Machined Aviation Aluminum Collar Support Bracket Holder, Bottom is ARCA-SWISS Fit Quick Release Plate Ball Head

This lens collar is tailor-made for Sigma 40mm f/1.4 DG HSM Art Lens; quick release plate feature is added to the bottom, very practical; positioning by the switch and bayonet. Cannot be rotated. All corners of the tripod mount ring are grinding rounded, with 3M film inside for protecting the lens from scratches; The lens support adopts lightweight design of hollow, with stainless steel screw, net weight is about 180g; the inner diameter of the tripod ring is about 82mm, the width is about 18mm; The bottom of the lens bracket is 70mm detachable quick release plate, with 1/4” and 3/8” screw holes and stainless-steel anti-slip screws at the bottom; The tripod collar mount ring is made of high quality Aviation Aluminum, lightweight and solid; precisely machined by world-class high-end CNC turning center, surface anodic oxidation; appearance and exquisite workmanship is much better than similar products made by mold; This lens holder bottom Quick Release Plate is 39mm Arca-Swiss fit, compatible with RRS / ARCA-SWISS / PMG / WIMBERLEY / MARKINS / PHOTOCLAM / SUNWAYFOTO / BENRO / SIRUI / MARSACE / ISHOOT ball head of Arca 39mm fit, suitable for iShoot IS-JZ30 / IS-JZ50 / IS-JZ64 / IS-QJ58 / IS-QJ64-FD / IS-JZ60BK / IS-JZ70MFT / IS-JZ80BK.