High-quality 5-piece precision ground...
Made with precision ground HSS-E and coated with cobalt for long life and high performance. Due to the alloying addition of Co in the cutting material these drill bits can be used for working with work pieces with a tensile strength of over 800N/m², which are difficult to cut. Self-cantering tip angle with 135°. Straight, cylindrical shank.Designed for production drilling and quick penetration into hard, abrasive materials, difficult to cut. Packed in a plastic storage case. Includes sizes from 1 to 10mm diameter.
Includes 5 x twist drills: