50803 SATA 5Pc. HSS Drill/Tap Bit M3x0.5MM

◆Made of high-quality HSS through all-grinding◆Whole process of drilling, tapping and deburring/countersinking completed through one-time operation, saving time and labor◆Designed with back tap to prevent damaging threads due to over-drilling◆A little lubricant required as tapping is slower than drilling◆Applicable thickness: 3.5MM thick medium carbon steel sheet◆Scope of application: in general, through-hole machining of carbon steel, alloy steel, cast iron, etc.