for GWR 4-6-0 Hall class with later driving wheels at 10 mm/ft
(The early Hall drivers had pin in line and no filled gaps).
A full set consists of 4 x T19 leading, 6 x T46 driving and 6 x T20 tender wheels.
Suitable for Gauge One Fine or Standard
The prototype driving wheel weights are surface mounted plates, and are not cast in.