The Sait 1/2" x 1" x 1/4" Tungsten Carbide SG5 Die Grinder Bur (45032) is designed for use with die grinders for deburring, finishing, shaping and enlarging holes, removing welds, and smoothing castings. The bur is produced from tungsten carbide by computer controlled diamond wheels for a concentric balanced design and a very sharp, uniform cutting edge. It comes with reusable storage to protect the bur when not in use.