Y.G-1 TOOL CO. SEME610400540

4mm 2FL Necked 30? 4G Mill Coated Carbide End Mill For Steels <HRc55, .5mm Radius, 40mm Reach, 6mm LOC, 80mm OAL 6mm LOC,6mm SHANK,80mm OAL 4G Carbide End Mill For High Speed Cutting Mold & Die Pre-Hardened Steels Up To HRc55 YG-1 Part # SEME610400540