This is M35 HSS 13pc Cobalt drill, the material is M35(5%), 135° split point improves positioning accuracy and reduces drilling resistance. The surface finishing is coffee color. M35 HSS Cobalt drill can be used for metal、 copper、 iron especially used for stainless iron. HSS M35 has a higher performance than 6542,the Hardness can reach 64°-67°.

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