[4 Spiral Flute Design] Four spiral flutes allow for faster and smoother drilling. It feels like you are cutting butter with a hot knife.
[9 Step Drill Bit] Supports drilling diameters of 4mm/0.16in, 6mm/0.24in, 8mm/0.3in, 10mm/0.4in, 12mm/0.47in, 14mm/0.55in, 16mm/0.6in, 18mm/0.7in, 20mm/0.8in.
[Durable and Long Lifespan] Made of M35 cobalt, the step drill bit is very durable and can withstand long time use without easy wear.
[89HRC Surface Hardness] Step drill bit with 89HRC surface hardness can be punched through harder materials, and achieve faster drilling speed.
[Wide Application] This step drill bit is perfect for stainless steel, metal sheet, wood, plastic, aluminum sheet, copper and other metal plates.
Specifications:
Item Type: Step Drill Bit
Material: M35+Cobalt
Drilling Diameter: 4 6 8 10 12 14 16 18 20mm
Shank Diameter: 1/4"
Package List:
1 x Drill Bit 1 x Storage Box