For grinding HSS and CARBIDE engraving cutter as well as single. lip or multiple-lip cutters of various shapes such as radiused cutters or negative taper angle of cutter. The universal index head is provide at 24 positions so that any particular angle or shape can be obtained, free 386oor 180o rotation is allowed. For grinding End Mills, twist Drill, Lathe Tools, only replace the attachment to the index head without any complex setup.