Robinson Racing Extra Hard Steel Pinion Gear 5mm

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Super hard, heat treated, "Absolute" pinion gears

  • are a must for using with our steel spur gears
  • and will last forever if used with plastic spur gears.
  • In sizes 9 through 21 teeth. (We try to stock as many of these at all times)
  • All pinions stamped with tooth number.
  • 5mm shaft bore.
  • One 4mm set screw included.
  • 2mm inch allen wrench (NOT INCLUDED) fits the 4mm set screw.