7 Pc Small Forstner Bits Set Forstner drill bits are made of finest high carbon steel, heat treated and tempered, polished. Precision machined and cut. Set includes sizes - 1/4", 3/8", 1/2", 5/8", 3/4", 7/8", 1". Super sharp carbide edges absorbs heat and punishment. Comes with handy wooden storage box.