Hornby #R8218 OO 14.1mm Diameter Metal Wheels (10Pcs) Pack of 10 assembled disc wheel sets. You can run Hornby trains and rolling stock on the Hornby track system and also other 00 gauge model railway trains such as Bachmann and Peco and quite happily any HO gauge railway locomotives and rolling stock such as Piko, Marklin, Roco, Brawa, Trix/Minitrix and Fleischmann. Hornby Metal Disc Wheels