Indexable Grooving and Parting Toolholder, NOVEX-CUT External Positive, Insert Style GX, Left Hand, Grooving, Shank Width 16.00 mm, ANSI Code G 1011.1616L -2T21GX24, Center to Cutting Tip 15.30 mm, Compatible Hardware Clamp Screw FS2118; Torx Key FS1464