Cobalt Drill Bit Set for Stainless Steel and Round Ironworking Case Cobalt M35 trial-c Set, 25-Piece Iron, Shank, Drill, Included, High-Speed Steel,

This case set includes 25 cobalt straight drills! Carefully selected cobalt drills cut through stainless steel with ease. The rarely used [1mm 1.5mm 2mm] has been changed to tap hole sizes [3.3mm (2 pieces) / 3.5mm / 4.2mm] for excellent usability. Carefully selected drill made from high-quality cobalt high-speed steel HssCo M35. Can be used on a wide range of materials including stainless steel, general steel, light metals, wood, and resin. Cobalt Straight Drill, 25-Piece Case Set. Includes: 2.5, 3.0, 3.3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, 8.5, 9, 9.5, 10, 10.5, 11, 11.5, 12, 12.5, and 13mm. 1mm, 1.5mm, and 2mm sizes are not included. Instead, we have included the standard pilot hole sizes of 3.3mm (2 pieces), 3.5mm, and 4.2mm. Cobalt high-speed steel drills for drilling stainless steel and iron. Round, straight shaft.