HSK - FACE MILL HOLDER Taper SizeHSK-A 100 A ➚ A .00012 58-60 HRc Ra 4µin G2.5 15,000 RPM HSK D1 D G1 D2 L2 L L1 Designation D1 L L1 D D2* G1* HSK A100 FM2-1/2x2.875 2.500 2.875 1.122 4.881 1.125 5/8-11 * Exists only in “FM” holders 765