These twist drill bits are suitable for use with any standard rotary tool;These durable bits are made of high carbon steel that have been hardened and tempered;These drilll bits come in a custom fit carryin case with all sizes clearly marked;Sizes included: 1/16, 5/64, 3/32, 7/64, 1/8, 9/64, 1/4, 5/32, 15/64, 7/32, 13/64, 3/16, 11/64;For use on sheet metal, wood and many other surfaces - ideal for jewelers and crafters

• Trademark Tools Carbon Steel Drill Bit Set w/ Carrying Case

Trademark Tools Carbon Steel Drill Bit Set w/ Carrying CaseTrademark Commerce