We major in producing those professional quality HSS step drill bits in HSS9341 and HSS M2.

High quality guarantees those single cutting edge creating perfect round holes in metal board, wood board, plastic, stainless steel with the thickness less than Step drill bit step height.

Surface Treatment: Bright finished, Tin-coated. Tin coating will improve that cutting life effectively.

Our step drill bits' common sizes cover the followings:
4 to 12mm in 5 or 9 steps
4 to 20mm in 9 steps
4 to 22mm in 10 steps
4 to 30mm in 14 steps
4 to 32mm in 15 steps
4 to 39mm in 14 steps
5 to 35mm in 13 steps
5 to 38mm in 14 steps
6 to 18mm in 7 steps
6 to 20mm in 8 steps
6 to 24mm in 10 steps
6 to 25mm in 7 steps
6 to 30mm in 13 steps
6 to 32mm in 8 or 9 steps
6 to 37mm in 12 steps
6 to 38mm in 12 steps
6 to 40mm in 16 steps
9 to 36mm in 10 steps
10 to 20mm in 11 steps

More sizes are available on customer's special requests. Our biggest feature is to produce various combination sizes of step drill bit upon customer's special requests.

Package: Double blister, Single Blister, Color bos, injection case, metal case, Al case, blow case, etc.