Large HSS Step Drill Bit, 12 Sizes Titanium High Speed Steel 6 to 60MM Drill Bit for Sheet Aluminium Metal Wood Hole Drilling, Big Multiple Hole Stepped Up Bit for DIY Lovers (1 PC Step Drill)

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  • One Bit for All -- The bit comes with 12 hole sizes 6mm, 10mm, 15mm, 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, 55mm, 60mm. , saving you time and efforts to change bits, quadrupling your drilling efficiency.
  • Durable Titanium Coated Bits -- The step drill bit is made from 4241 High Speed Steel, wear resistance for better and faster hole -drilling performance.
  • Easy to Use -- Compared with ordinary twist drills. The shaking is small, and it can be opened without the use of center punching.
  • Use tools -- pistol drill, table drill. Filling water to cool while working can effectively extend the service life of the drill bit, and the recommended drilling speed is 250--400 rpm.

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