5 H0e tippers modelled after the Spoorijzer KW13 1m3. This is the exact version. For the Roco / Minitrains / Egger-Bahn compatible version see here
The model is designed to been used with these axles. But any H0e axle ~14mm wide and with a flange no larger than 7.6mm in diameter will do. Some examples are the Sehling RDS4.3-SH0e wheels, Metal Wheels from Nigel Lawton or Roco / Fleischmann 20024.