HSS Twist Drill Bits

  • HSS Step Twist Drill Bits
  • HSS Step Twist Drill Bits
  • HSS Step Twist Drill Bits
  • HSS Step Twist Drill Bits
  • HSS Step Twist Drill Bits
  • HSS Step Twist Drill Bits
  • HSS Step Twist Drill Bits
HSS Step Twist Drill BitsHSS Step Twist Drill BitsHSS Step Twist Drill BitsHSS Step Twist Drill BitsHSS Step Twist Drill BitsHSS Step Twist Drill BitsHSS Step Twist Drill Bits

HSS Step Twist Drill Bits

  • Material: HSS 4241,4341,M2,M35
  • Surface:Titanium Coated
  • Product No.:2133
  • Package: 3pcs/set
  • Product description: SCOWELL Designed to start on contact for clean, accurate holes and a reduced likelihood of lock-up on breakthrough,The unique step structure, a drill can drill a variety of sizes of the aperture.You c
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HSS Step Twist Drill Bits


1.Material:High Speed Steel 4241# ,4341#, M2, M35
2.Diameter:
Metric Siz:

  • 4 steps:   4-12mm(4,6,8,10,12mm)
  • 8 steps:   4-20mm(4,6,8,10,12,14,16,18,20mm)
  • 14 steps: 4-32mm(4,6,8,10,12,14,16,18,20,22,24,26,28,30,32mm)

Inch Size:
  • 5 steps:3/16''(4.76mm), 1/4''(6.35mm), 5/16''(7.94mm), 3/8''(10.35mm), 7/16''(11.11mm),  1/2''(12.7mm)
  • 8 steps:  1/4''(6.35mm) ,5/16''(7.94mm),  3/8''(10.35mm), 7/16''(11.11mm),1/2''(12.7mm),9/16''(14.28mm), 5/8''(15.88mm), 11/16''(17.46mm), 3/4''(19.05mm)
  • 12 steps:  1/8''(3.18mm), 5/32''(3.97mm), 3/16''(4.76mm), 7/32'',(5.56mm)1/4''(,9/32''(7.14mm), 5/16''(7.94mm), 11/32''(8.73mm),3/8''(9.53mm),13/32''(10.32mm),7/16''(11.11mm),15/32''(11.91mm),1/2''(12.7mm)


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