Blade can fit directly into a quick change tool post holder # 7 in the appropriate series size without another holder. Interchangeable with Aloris and DORIAN brand tool holders of the same series. Blade marked with vernier line increment in 32nd. For grooves, parting off to center and chamfering. Easy removal of insert with included extractor. Easy reference guide for insert number, screw, and other accessories is printed on the tool shank.