Mill 4 -12 ™ KT A Full Tangential Shoulder Milling Solution Kennametal’s Mill 4-12KT requires up to 15% less horsepower, enabling increased feed rates even on 40 taper machines. Its proprietary insert design features a triangular shaped margin that provides unprecedented stability in steel and cast-iron applications and its minimal axial runout delivers excellent floor finish. With seven grades, seven corner radii and a depth-of-cut range up to .472" (12mm), the Mill 4-12KT can bring new versatility to your shoulder milling applications. Machinists can expect • A proprietary insert design that delivers unprecedented stability in steel and cast-iron applications. • A comprehensive portfolio that offers a wide range of standard inch and metric sizes. • NEW! Precision pressed PU Geometry for the lowest cost per cutting edge.