Marble Run - Stairs (Joyin Compatible)

This is another marble run piece. I haven't made any new parts in about a year, so I thought I'd try a few new designs. The bridge is four inches across on center to fit any of the other standard Joyin parts. The peg height is 63.5mm (2.5"). The bases pictured are part of my original parts: https://www.thingiverse.com/thing:6892789 I have 2.5" and 3" bases as well located here: https://www.thingiverse.com/thing:6951538