Solid Carbide EndmillsMilling Solid Carbide Endmills G550 - High Helix ∙ Square ∙ 6F .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. Order No. Dia. (d) CL(L1) OAL Shank Flutes(L)(D)(F) EPSSH EPSSH606000U 6 15 50 6 6 EPSSH608000U 8 20 60 8 6 EPSSH610000U 10 25 75 10 6 P M K N S H EPSSH612000U 12 30 75 12 6 ● ● ● ○ d L1 L D (h6) Cutting conditions : Table 027 d Tolerance d≤6 0 ~ -0.02 6 < d ≤ 12 0 ~ -0.03 d > 12 0 ~ -0.04 A080