Infinite adjustment from 9mm to 15mm (0.354" to 0.591").
For main axle spacing down to 8.6mm (0.339").
For 2-rail: AC, DC and DCC.
** See our “Scale Reference Guide” for all the scales covered in our 40 Series.
Watch our video “Spreader Bars & N-scale” to see the stabilizer ports in action.
Shown above: Part 40SA-4