EXOCARB® WXL® Premium Performance Carbide End Mills with OSG’s Proprietary WXL® Coating List 3770: 2 Flute, Corner Radius, Regular Length Slotting Hardness Up to 20 HRC 20 to 30 HRC 30 to 38 HRC 38 to 45 HRC 45 to 55 HRC 55 to 60 HRC Work Mild SteelMaterialCarbon SteelsAlloy SteelsTool SteelsHardened Steels Hardened SteelsPre-hardenedPre-hardenedHardened SteelsHardened SteelsSteelsSteels CuttingSpeed 275 SFM 220 SFM 180 SFM 150 SFM 100 SFM 65 SFM Dia. aaDepthD<10.1Dof Cut1