HSS Step Drill Bit
For drilling holes in metal material, wood and hard plastic.
Single cutting edge creates perfectly round holes in metal, plastic, wood and other thin materials without center punching.
Surface treatment: Bright finished, Tin-coated, Zr-coated, Black-oxidized
Other special specifications and sizes are available upon customers requests.
 

Specification:
Material:HSS9341,M2
Packing: double blister,sliding card,wood box, or design by customer's requests.