HSS Step Drill Bit

size 4-32mm

Type: 4~20 / 3~12 / 4~12
4~20: 9steps-4mm / 6mm / 8mm / 10mm / 12mm / 14mm / 16mm / 18mm / 20mm
3~10: 10steps-3mm /4mm / 5mm / 6mm / 7mm / 8mm / 9mm / 10mm / 11mm / 12mm
4~12: 5steps-4mm / 6mm / 8mm / 10mm /12mm

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.

Material of HSS 9341, M2 are availiable for choice.

Surface Treatment: Bright finished, Tin-coated, Zr-coated, Black-oxidized