iShoot IS-THC328 Tripod Mount Base for Canon 300mm f/2.8L IS II USM

iShoot IS-THC328 Tripod Mount Base Replacement for Canon 300mm f/2.8L IS II USM Product model: IS-THC328 for Canon 300mm f/2.8L IS II USM iShoot IS-THC328 high quality replacement Tripod Mount Base for Canon EF 200mm f/2L IS USM, EF 300mm f/2.8L IS II USM, EF 400mm f/2.8L IS II USM Made of Aviation aluminium, CNC precisely machined, one piece design, hand-polished, anodized surface, with stainless steel screw, 1/4" screw hole, and belt buckle, net weight is about 100g; Referring to Canon EF 300mm f/2.8L IS II USM original lens tripod mount base structure design, bottom part is Arca type quick release interface of 60mm in length, features a finger feel gripn, convenient for gripping, screw holes precisely matched Compatible with Canon EF 200mm f/2L IS USM, EF 300mm f/2.8L IS II USM, EF 400mm f/2.8L IS II USM Arca-Swiss compatible 39mm standard interface, compatible with RRS / ARCA-SWISS / KIRK / WIMBERLEY / MARKINS / SUNWAYFOTO / KANGRINPOCHE / BENRO / SIRUI / MARSACE ball head, also