M42 8% Cobalt Twist Drill Bits for Stainless Steel and Hard 1.5-6.5mm (13PCS)

13pcs Include1.5mm\2mm\2.5mm\3mm\3.2mm\3.5mm\4mm\4.5mm\4.8mm\5mm\5.5mm\6mm\6.5mm. Premium 8% Cobalt M42,Usually Give the Best Heat,Wear and Chip Resistance. (3) This drill bits set is made of. Cobalt gives high-speed steel more heat and wear resistance.

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