Characteristics: Made of M35 material including cobalt, with high hardness, stable operation. The tip with a 135-degree split blade starts drilling immediately with less force and eliminates “walking” on the work surface. Ideal do drilling in stainless steel, cast iron, sheet metal, steel sheets, angles. With its high surface finish and high precision grinding, the blade is sharp and durable to use. It is widely used do drilling stainless steel sheet, automotive spring steel and die steel . 74 Specification: Material: HSS CO/M35 Size: 1mm x 10pcs, 1.5mm x 10pcs, 2mm x 10pcs, 2.5mm x 10pcs 3mm x 5pcs, 3.2mm x 5pcs, 3.5mm x 5pcs , 4 mm x 5 pieces, 5 mm x 5 pieces, 6 mm x 5 pieces, 7 mm x 2 pieces, 8 mm x 2 pieces Weight: 348 g / 12,3 oz (approximately) List of packages: 74 x M35 Cobalt Drill Bit