7mm scale Etched Brass Kit with whitemetal castings. 420 built from 1893 and subsequently enlarged to 20 ton capacity as diagram P7 (Kit SBM7086). Southwark Bridge Kits do not contain wheels, bearings, couplings or wire. Two axles 3ft 1in ten spoke wagon wheels needed to complete. We can supply wheels by Slaters and couplings by Premier or Slaters.