RUKO 101051HHSS stepped drill with size 1 bit holder

HSS stepped drill bit, CBN ground, spiral flute

From 4.0 - 20.0 mm in increments of 2.0 mm.

The bit holder and special cutting edge geometry make it the ideal tool for cordless drills.
  • General
    • Type
    • HSS step drill
    • Design
    • 6-edge
  • Implementation
    • Boring aperture
    • 4.0 - 20.0 mm