iShoot Tripod Mount Ring Base Lens Collar Foot Stand for Canon EF 200mm f/1.8L USM EF 300mm and EF 400mm f/2.8L is II USM Bottom is Quick Release Plate Compatible with Arca-Swiss Fit Ball Head

iShoot Lens Collar Stand Foot Tripod Mount Ring Support Base IS-THC328 for Canon EF 200mm f/1.8L USM?Canon EF 300mm f/2.8L IS II USM and Canon EF 400mm f/2.8L IS II USM Bottom is ARCA Type Quick Release Plate Feature, Compatible with Tripod Ball Head of RRS / ARCA-SWISS Fit Main features: 1. Through precise matching with a variety of lenses, to ensure the accuracy of the installation, the tripod mount ring support is tailor-made for: Canon EF 200mm f/1.8L USM, Canon EF 300mm f/2.8L IS II USM, Canon EF 400mm f/2.8L IS II USM; can't be used for other lenses? 2. The lens collar foot referring to Canon EF 300mm f/2.8L IS II USM original lens tripod mount base structure design, bottom is added Arca fit quick release plate of 60mm long, belt buckle, and the features of finger position, convenient for gripping, screw holes precisely matched, more practical; net weight is about 100g; 3. The lens collar stand bottom is added 60mm long Arca fit quick release plate feature, can be used with 39mm Arca-swiss fit tripod ball head, panoramic head and clamp directly; more practical than lens collars without QR-Plate; also reserved 1/4" screw hole and stainless-steel anti-slip screw for fixing lens to tripod directly; 4. This lens collar support base bottom's dovetail groove is 39mm Arca-Swiss standard, 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. Applicable to: Canon EF 200mm f/1.8L USM Canon EF 300mm f/2.8L IS II USM Canon EF 400mm f/2.8L IS II USM Can't be used for other lenses Package Includes: 1 x iShoot lens collar stand foot IS-THC328 (Note: The other items in the photos not listed here are for illustrating only, not included)