10 sizes can be drilled.
With chip breaker function.
[Uses] Drilling work on aluminum plates, plastic, wood, non-flammable materials, etc.
Since the holes are gradually larged from the small diameter of the hexagonal shaft to the large diameter, there is less snagging, recoil (shock) or vibration during drilling, allowing for smooth drilling.
The shank is hexagonal shaft, so it does not slip when putting a drill chunk, and can be used with impact drivers.
When using with a cordless driver or cordless impact driver, we recommend that models of 12 V or above.
2 spiral grooves (spiral grooves) ensure a super smooth cutting drain and longer cutting edge
The spiral groove has a chip breaker function (size 0.4 inch (11 mm) groove) which reduces clogging of the cut when drilling work, and reduces heat generated than normal products, allowing for speedy drilling work.
The tip is thinned for better bites on the material and eliminates the need for a center punch.
Hardness: HRC63-65
Size: Approx. 1.2 x 3.0 x 1.2 inches (3 x 7.7
Weight: Approx. 2.0 oz (58 g).
Material: HSS Co.
Country of Origin: China.