Suitable for all 1:5 models.
Diameter 63 mm
Width 15.5 mm
Tooth width 12 mm
Module: m=1,5

Profile regraded, this means that the number of teeth is changed while the diameter remained constant. The part of the involutes? curve that defines the tooth profile is changed. Positively regraded (lower number of teeth) pinions are stronger and run smoother, the reduced strength of negatively regraded pinions doesn?t really matter.