Solid Carbide Endmills G550 - High Helix Square Type - 6F 鎢鋼平銑刀 - 高導型 - 6 刃 . UNICO Coating provides superior wear resistance and reduces the coefficient of friction . Suitable for HRC 30 to HRC 55 Ordinary Steel, Alloy Steel, Cast Iron, Heat-Resistant Steel, FRP, etc. . Greater shearing action results in increased speeds and feeds and faster stock removal. . Strong helix design provides hi speed milling capabilities. . Six flute for good surface milling. Dia. CL OAL Shank Flutes Order No. (d) (L1) (L) (D) (F) EPSSH6 EPSCH6 EPSSH606000U 6 15 50 6 6 EPSSH608000U 8 20 60 8 6 EPSSH610000U 10 25 75 10 6 EPSSH612000U 12 30 75 12 6 EPSCH606000U 6 30 75 6 6 d EPSCH608000U 8 35 100 8 6 EPSCH608000U45C 8 45 100 8 6 EPSCH610000U 10 45 100 10 6 L1 EPSCH610000U55C 10 55 100 10 6 EPSCH612000U 12 45 100 12 6 EPSCH612000U55C 12 55 100 12 6 EPSCH616000U 16 70 150 16 6 L D 45 ° d Tolerance Ø < 3 0 ~ -0.03 3 ≦ Ø ≦ 10 0 ~ -0.04 Ø > 10 0 ~ -0.05 A072