12 PCS HSS Combined Center Drills Bit Set Countersink 60 Degree Angle 5/3/2.5/2/1.5/1 mm
- Drill accurate center holes in material prior to turning, or use as a starter bit for accurate holesHigh speed steel (HSS) made, stable performance and DurableSharp and twisted drill will make the drilling be more easy and effortlessStraight shank design is more suitable for many drills and drilling machinesSuitable for metal
