Stark Usa Industrial 5Pc Cobalt Uni Step Bits Spiral Flute Drill Bit Set

It great for sheet metal, aluminum sheets, wood chips, plastic and wood board. It a perfect choice for DIY and engineering use.
Engraved Sizes Easily identify which size you need with the contrasted, laser engraved sizes inside the step drill bit flute.
High speed steel along with titanium coating ensures outstanding durability and sharpness, can reduces the friction, runs cooler.
Split point tip is at 118 degrees to increase the wear resistance. The two-flute design provides a smoother cutting, allows the material particles escape easily for a much cleaner drilling operation.
Set includes (5) common sizes for versatility, can fit the majority of brands currently on the markets.
The tri-flatted shank is a great universal fit that will give you confidence while you work knowing that your drill bit is securely in place.

Flute Shape: Straight Flute
Material: Titanium Nitride Coated (HSS)
Bit Size:
3/16" to 1/2" - 6 Steps (3/16, 1/4, 5/16, 3/8, 7/16, 1/2)
1/8" to 1/2" - 13 Steps (1/8, 5/32, 3/16, 7/32, 1/4, 9/32, 5/16, 11/32, 3/8, 13/32, 7/16, 15/32, 1/2)
1/4" to 3/4" - 9 Steps (1/4, 5/16, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4)
1/4" to 1-3/8" -10 Steps (1/4, 3/8, 1/2, 5/8, 3/4, 7/8, 1, 1-1/8, 1-1/4, 1-3/8)
3/16" to 7/8" - 12 Steps (1/4, 5/16, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 13/16, 7/8)
Package Content:

5pc Step Drill Bit
Storage Case