Description of the Micro-Mark Bearing Tool
The Truck Tuner reconditions your HO gauge railroad / railways bogies / truck bearings hole so cars roll smoother with less friction.
Simply insert the tool in place of a wheelset and rotate the shank. Truck Tuner's extra-sharp tool-steel cutter reshapes the bearing hole to the NMRA's recommended 60 degree contour and cleans out burrs and grime.
Repeat for all bearings and your car is ready to really roll. Increases train lengths that locomotives can pull by up to 20 percent! For HO standard gauge bogie/trucks only.
