1Made of M35 material including cobalt,having high hardness, stable performance. 2135-degree split-point tip starts drilling immediately with less force and eliminates 3Ideal for drilling on stainless steel, cast iron, sheet metal, steel plate, Angle iron. 4With high surface finish, high grinding precision , the blade is sharp and durable in use. 5It is widely used in the drilling of stainless steel plate, automobile spring steel and die steel Features: Made of M35 materialincludingcobalt,having high hardness, stable performance. 135-degree split-point tip starts drilling immediately with less force and eliminates "walking" across the work surface. Ideal for drilling on stainless steel, cast iron, sheet metal, steel plate, Angle iron. With high surface finish, high grinding precision , the blade is sharp and durable in use. It is widely used in the drilling of stainless steel plate, automobile spring steel and die steel Specification: Material: HSS CO/M35 Size:1MM x 10pcs,1.5MM x 10pcs, 2MMx10pcs, 2.5MM x10pcs 3MMx5pcs,3.2MM x5 pcs, 3.5MM x5 pcs, 4MMx5 pcs, 5MMx5 pcs, 6MMx5 pcs , 7MMx2 pcs, 8MMx2 pcs Weight: 348 g / 12.3 oz(approx.) Package list: 74 xM35 Cobalt Drill Bit Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.