10pcs M35 HSS Cobalt Drill Bits CO Set Twist 3mm for Drilling on Stainless Steel

【MATERIAL】Made of M35 material, includes 5% cobalt, high hardness, stable performance 【HIGH QUALITY】with high finish, high grinding precision , the blade is sharp and in use 【WIDE APPLICATION】ideal for drilling on stainless steel, cast iron, sheet metal, steel plate, Angle iron; widely used in the drilling of stainless steel plate, automobile spring steel and die steel 【NOTE】The titanium drill bits set can NOT be used in the impact drill 【Note】135 degrees is the best angle of use for this twist drill, which can start drilling with the smallest force, saving time and effort.