The Alpen Hss Cobalt Drill Bit Set (19 Piece, 1.0-10.0Mm X 0.5Mm) Is A Premium Collection Designed For High-Performance Drilling In Tough Materials Such As Stainless Steel, Hardened Steel, And Other Metals. Each Bit Is Made From High-Speed Steel (Hss) With A Cobalt Alloy, Providing Exceptional Hardness, Heat Resistance, And Durability. The Set Includes A Range Of Sizes From 1.0Mm To 10.0Mm In 0.5Mm Increments, Ensuring Versatility For Various Applications. The Precision Ground Tips Allow For Accurate Drilling And Reduced Friction, Enhancing Performance. Ideal For Professionals And Diy Enthusiasts, This Set Is Perfect For Metalworking, Fabrication, And Other Demanding Tasks.