3 pcs/set 4-12/20/32mm HSS Step Spiral Groove Cone Drill Hole Cutter Bit
- It is most commonly used on softer materials such as thin iron sheet, aluminum, PVC and wood board within 5mm or thinner.
- Surface is coated which give the drill bit a beautiful color and will not fade easily.
- The step drill bit is made from high speed steel of high hardness and good wear resistance.
- Can be installed in table drill and electric hand drill, if for electric hand drill, the recommended power is more than 550W
- Can be used for drilling a wide range of hole sizes from 4mm to 32mm.
