iShoot Lens Collar Support Tripod Mount Ring for Sigma 100-400mm f/5-6.3 DG OS HSM Contemporary Lens, Bottom is ARCA Type Quick Release Plate Compatible with Tripod Ball Head of ARCA-Swiss/Kirk Fit - ZP-IS-SM140

• 1. The lens collar is tailor-made and only Compatible with Sigma 100-400mm f/5-6.3 DG OS HSM Contemporary Lens (EF and F Mount), Not Compatible with Sigma 100-400mm f/5-6.3 DG DN OS (E-mount and L-Mount) and other lenses； 2. The lens collar is made of aviation aluminum, CNC precisely machined, hollow-out weight reduction design, surface polished and anodized, with stainless steel screw. 3. The tripod mount ring is tailored to the lens. Cannot be rotated, with 3M film inside, inner diameter is about 84mm, width is about 23mm. 4. Bottom is added quick release plate feature, plate length is about 70mm, with 1/4 and 3/8 screw holes and stainless steel anti-slip screw, net weight is about 160g. 5. Quick release plate is AS 39mm standard, compatible with RRS / ARCA-SWISS / KIRK / WIMBERLEY / MARKINS / SUNWAYFOTO / KANGRINPOCHE / BENRO / SIRUI / MARSACE / ISHOOT tripod ball head of Arca 39mm fit, for iShoot IS-JZ30 / IS-JZ50 / IS-JZ64 / IS-QJ58 / IS-QJ64 / IS-QJ64-FD / IS-JZ60BK / IS-JZ70MFT / IS-JZ80BK clamp.