iShoot CNC Machined 82mm Tripod Mount Ring Lens Collar for Sigma 40mm f/1.4 DG HSM Art Lens, Built-in ARCA Type Quick Release Plate Compatible with Ball Head of ARCA-Swiss PMG Fit

The lens support is tailor-made for Sigma 40mm f/1.4 DG HSM Art Lens; The tripod mount ring is made of aviation aluminum, CNC precisely machined, hollow-out weight reduction design, polished and surface anodized, with stainless steel screw; net weight is about 180g; Tailor-made according to the lens. Positioning by the switch and bayonet. Cannot be rotated. All corners of the lens collar are grinding rounded, using 3M plastic film inside to prevent lens wear; The inner diameter of the lens support is about 82mm and the width is about 18mm. Added the function of quick release plate. The length of the plate is about 70mm, with 1/4 and 3/8 screw holes and stainless steel anti-slip screws; Bottom quick release plate is AS standard, compatible with RRS / ARCA-SWISS / PMG / WIMBERLEY / MARKINS / PHOTOCLAM / SUNWAYFOTO / BENRO / SIRUI / MARSACE / ISHOOT tripod ball head of Arca 39mm fit, suitable for iShoot IS-JZ50 / IS-JZ64 / IS-QJ58 / IS-QJ64-FD / IS-Z60BK / IS-JZ70MFT / IS-JZ80BK / IS-JZ85.