The file 'Electric Longboard Belt-wheel-wheel T5 3D Printer Model' is (stl) file type, size is 72.4KB.
Toothed belt drive gear, T5, for an electric longboard.
Don't really know if it will work good with the belt, but I think so.
EDIT: I recommend not using ordinary T5 belt, but to use the stronger HTD 5m instead. I made the equivalent for HTD 5m, which I have tested successfully:
http://www.thingiverse.com/thing:659444
kugg32.stl | 309.7KB |