... 58mm, 62mm, 77mm, 82mm d. We are factory 1. Name: in stock 37mm 58mm adapter ring2. Feature: 49mm-52mm adapter ring , adapter ... are focused on manufacturing CUSTOMIZED high-precision CNC machining parts and casting parts by different materials, including alloy, stainless steel, ... parts,auto lathe parts,casting parts and other machining service.We have enough stock for all size rings, 37mm, 46mm, 52mm, ...