Constructed of fine grain cast iron and sporting a super finish, these chucks are made to exacting tolerances to hold your work safe and secure. They come supplied with the D1 camlock mounting system and all necessary hardware for mounting to your lathe. Walking into the factory that makes these South Bend Lathe chucks, one would be amazed at the plethora of high tech German made CNC machines, Zeiss and Tesa Comparators, and other testing equipment made by some of the most respected names in the world. These South Bend lathe chucks are amongst the best available on the market. Absolute top quality chucks made for high precision work and made with tight tolerances to satisfy the most demanding machinists out there!