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HSS Step Drill bits HSS 4 - 20 mm, 1/4", 70,5mm

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Quick Overview



  • HSS step drill bits - 4 - 20 mm, 1/4", 70,5 mm



  • Suitable for virtually all thin materials, e.g. non-ferrous metals, sheet steel, plastic or stainless steel.

  • For burr-free drilling in thin sheet metals without pre-drilling. for deburring, for round holes, drilling several diameters with one drill bit, enlarging existing holes.

  • Spiral flute for longer lifetime, less vibration and a faster drilling rate. 

Availability: In stock

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  • Details

    Suitable for virtually all thin materials, e.g. non-ferrous metals, sheet steel, plastic or stainless steel. For burr-free drilling in thin sheet metals without pre-drilling. for deburring, for round holes, drilling several diameters with one drill bit, enlarging existing holes. Spiral flute for longer lifetime, less vibration and a faster drilling rate. Diameter mark in both flutes. 3-flat shank to prevent slipping in the chuck. available in three versions:. HSS = 100 % service life. HSS-TiN = 125 % service life. HSS-AlTiN = 150% service life (no cooling necessary). 9 steps, diameter 4-6-8-10-12-14-16-18-20 mm. 4 - 20 mm, 1/4", 70,5 mm.

    Technical data

    Category Step drill bit
    Drill hole diameter 4 - 20 mm
    Material HSS
    Material suitability Metal, PVC
    Total length 70.5 mm
    Tool holder 1/4" (6.3 mm)
    Features Spiral groove
    Content 1 pc(s)

    Additional Information

    Manufacturer Bosch
    Condition New
    Warranty 6 months
    Tax Class VAT 7.5%
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