IVY Classic Industries is dedicated to producing a comprehensive, quality line of power tool accessories and hand tools. IVY Classic Swift Bore 13-Piece High Speed Steel Drill Bit Set contains jobber length drill bits for drilling steel, wood and plastic. These bits are roll forged, with a two tone finish and black oxide flutes with a bright outer grind and are constructed out of hardened and tempered high speed steel. They feature a general purpose 118-degree standard point and come packaged in a sturdy metal case with a hinged index. Bits are clearly visible with sizes marked on the case. This 13-piece drill set includes: 1/16-inch through 1/4-inch in 1/64-inch increments as follows: 1/16, 5/64, 3/32, 7/64, 1/8, 9/64, 5/32, 11/64, 3/16, 13/64, 7/32, 15/64, 1/4-Inch drill bits.