Chipbreaker fast stock removal for improved control and reduced chips. For use on hard materials, ie steel alloy 50RC, 50RC, Carbon and cast iron. Burrs made of high quality tungsten carbide Blow molded case for easy storage and transport Set includes: 1PC SD-1 Ball Shape (1/4") 1PC SC-3 Cylindrical Radius End (3/8" x 3/4") 1PC SA-3 Cylindrical Shape (3/8" x3/4") 1PC SB-3 Cylindrical End Cut (3/8" x 3/4") 1PC SF-3 Tree Shape Radius End (3/8" x 3/4") 1PC SG-3 Tree Shape Pointed End (3/8" x 3/4") 1PC SL-3 Taper Shape Radius End (3/8" x1-1/16") 1PC SM-2 Cone Shape (1/4" x 3/4")