HTC radius carbide end milling cutters feature a 30 degree helix angle and are center cutting for plunging, slotting and profiling. As with all of our solid carbide tools, these radius end mills are manufactured using state-of-the-art machinery, manufacturing processes and inspection techniques, making them the preferred choice of carbide endmills for machinists wanting to produce high quality parts with maximum tool life. Corner radius end mills improve productivity and reduce costs. A sharp corner of an end mill is its weakest point. The corner radius design strengthens the endmill by reducing chipping and providing longer tool life.