Consisting of:
2x train wheel size S without wheel flange
formed spokes
Circumferential groove for fastening an adhesive tyre
Short pin, for fastening narrow espagnolette rods
Rear pin for mounting in the centre bore of motors 
We recommend oiling this connection with a drop of plastic-compatible oil. 
Size suitable for 55423c01
 
Not suitable for children under 3 years due to small parts that can be swallowed! Choking hazard, please do not leave your child unattended while playing as components or parts may be swallowed or inhaled!