Made from quality carbon steel with a highly polished chisel surface for easy penetration. Features a large open side for fast chip removal. The walls of the chisel point are of equal thickness for superior long-lasting performance. Supplied in a wooden storage box. Sizes include drill sizes of 6mm, 10mm, 13mm, and 16mm, and shank sizes of 4mm, 6mm, 9mm, and 12mm.