Made for roughing and semi-finishing operations, the square T4 features four cutting edges and an innovative tangential cutter design that increases the surface area of contact between the insert and the cutter body resulting in good surface finish during slotting, contouring and plunging applications. The square T4's strong, reliable pocket seats combined with multi-edge inserts optimize cutting stability and allow for clean 90 deg walls. The inserts mount tangentially in the cutter so that the cutting forces impact the thickest parts of the inserts, allowing manufacturers to achieve the required levels of strength for increased depths of cut with small diameters. The square T4 also provides a smooth cutting action via positive rake angles with a variable lead angle on the cutting edge. This T4 square shoulder milling cutter is available in T4-08 and T4-12 sizes to bring high metal removal rates and versatility to manufacturers in a wide variety of general milling applications in steels, cast irons and more difficult materials including stainless steels, titanium and heat resistant super alloys, under appropriate cutting conditions.