1、Vacuum quenching processing, hard processing, wear-resistant and durable. 2、Precision chamfering, one time forming. 3、Smooth chamfering of countersunk holes and long life with cobalt plated titanium. 4、Grinding in the groove to prevent chip accumulation. ProductSiteLaunchDate : 2024-12-27T03:26:19.535Z Size : 40mm Style : 20mm branch drill UnitCount : 1 UnspscCode : 52150000