P307 outer coupled wheels, P308 mid coupled wheels, P309 driven wheel.

4′ 9½″ diam., 13 oval spokes.
Hub 13″ face dia., level with the tyre. Pin between at 13″.

Casting: 45.2 mm tread dia., 39.7 mm i/d., hub level with the tyre. Pin at 10.3 mm.

Casting prices and stock . WD and USATC loco sets, price list

Scan of castings in a set for a USATC S160 2-8-0 Class S160