... series used in grinding bore diameter, outer diameter, broach, thread, etc. Our types as follows:MD / MDF / MDT / MDS / ... used in grinding bore diameter, outer diameter, broach, thread, etc.XD / XDS / XDJ series used in general parts, carpenter ... lathe, etc.Other spindles that used in cutting machine, testing machine, driving, etc that special design for customers requirement. High-frequency spindles