This 19-piece HSS drill bit set offers excellent toughness and precision, designed for efficient drilling of alloyed carbon and plain steel, as well as plastics and wood. HSS Twist Drills : Combines toughness and precision for superior cutting efficiency. DIN338 Standard : Metric high-speed steel drill bits conforming to DIN338 standards. Sizes : Includes drills in sizes from 1.0mm to 10.0mm in 0.5mm increments. Versatile Use : Ideal for drilling various materials including alloyed carbon, plain steel, plastic, and wood. Heat and Corrosion Resistance : Good resistance to heat and corrosion for extended durability. Storage : Supplied in a sturdy metal tin with a barcode and euro hook hanger. Drills are clearly marked for easy identification. Brand : PTI