13 Piece USA Made Drill Bit Set 1/16" - 1/4" by 64ths Complete with Index. Drill Bit Sets Industrial Quality at Wholesale Price. High Speed Steel drill bits are ideal for production, maintenance and portable drilling jobs. These High Speed Steel USA Made Drill Bits are surface treated, high speed steel and jobber length. These USA Made Drill Bits are dependable, general purpose drills designed to perform in a broad range of materials including iron and steel. Drills bits have a 118 degree point and are surface treated with abrasion-resistant black oxide. Bisco Tool Supply sells all sizes of fractional drill bits, metric drill bits, and numbered bits. Please call the Bisco Tool Supply sales staff toll-free at 1-866-247-2635 with any drill bit questions.