Tripod Mount Ring, CNC Machined Lens Collar Support Stand for Sigma 120-300mm f/2.8 DG OS HSM Sports Lens Bottom is ARCA Fit Quick Release Plate Compatible with Tripod Ball Head of ARCA-Swiss Fit

Tripod Mount Ring, CNC Machined Lens Collar Support Stand for Sigma 120-300mm f/2.8 DG OS HSM Sports Lens, Bottom is ARCA Fit Quick Release Plate Compatible with Tripod Ball Head of ARCA-SWISS Fit Main features: ?1?The lens collar is made of aviation aluminum, CNC precisely machined, hollow-out weight reduction design, surface polished and anodized, with stainless steel screw; ?2?The tripod mount ring is same to original design; with 3M film inside, inner diameter is about 87mm, width is about 21mm; bottom is added quick release plate feature, plate length is about 120mm, with 1/4 and 3/8 screw holes and stainless steel anti-slip screws. It is about 82g lighter than the original tripod mount ring TS-51, and its net weight is only about 278g; ?3?Specially designed for Sigma 120-300mm f/2.8 DG OS HSM Sports Lens; ?4?Bottom quick release plate is AS 39mm standard, compatible with ARCA-SWISS / PMG / WIMBERLEY / SUNWAYFOTO / BENRO / SIRUI / MARSACE / ISHOOT tripod ball head of Arca 39mm fit, suitable for IS-JZ30 / IS-JZ50 / IS-JZ64 / IS-QJ58 / IS-QJ64 / IS-QJ64-FD / IS-JZ60BK / IS-JZ70MFT / IS-JZ80BK clamp. Package Includes: 1 x iShoot Tripod Mount Ring IS-SM1230 for Sigma 120-300mm f/2.8 DG OS HSM Sports Lens (Note: The other items in the photos not listed here are for illustrating only, not included)