29-Piece Drill Bit Set, High-Speed Steel Black and Gold Finish with 135 Degree Split Point Tip, 1/16″ to 1/2″ X 64Ths Increments. Versatile general-purpose drill bit set, High-speed steel (HSS) and gold oxide finish resists corrosion and increases the hardness of the drill bit. Assortment of 29 jobber length drill bits (1/16″ to 1/2″ in 1/64 increments). Shanks fit standard three-jaw drills, and use in drilling wood, plastic and Light-gauge metal. Three unique shank styles keep bits securely seated to save you time and frustration. 1/16″-11/64″ is round shank, 3/16″-3/8″ is three flatted shank, 25/64″-1/2″ is 3/8 reduced shank and three flatted shank. ORGANIZED HOLDER- Set includes the drill bit holder with size index for easy storage and organizing. 15 PIECES 1/16″-3/8″. 21 PIECES:1-16:-1/4. 29 PIECES:1-16:-1/2. COMOWARE COBALT DRILL BIT SET. 4.5 out of 5 stars. 16″ -1/2″, A to Z, #1-#60. HSS WITH 5% COBALT. 29 pcs Black Gold. Oxide Coated, Gold, Steel. 7.44 x 4.49 x 2.2 inches; 1 Pounds. Product Dimensions: 4.49 inches x 7.44 inches x 2.2 inches. Weight: 1.0 lb. We reserve the right to cancel any order for any reason at any time. We are not responsible for undeliverable addresses. Your satisfaction is guaranteed! All of our items, unless otherwise stated, will only run on 120 volts. Please check to make sure your country complies with these specifications. We will work with you to resolve any problem you may have.