DeWalt DD4120B6 5/16″ Cobalt Machine Drill Bits 6Pcs.Made in Germany
Patented web taper is 2X larger than the competition for increased strength, rigidity and breakage resistance –
Optimized 135 degree split point gives exceptional service life and also allows the bit to start on contact –
Heavy duty flute design produces maximum durability –
Increased cobalt content provides exceptional wear resistance and longer life
