they work similarly to oversized washers

1 x Main Differential Gear (45T GP6)

Do not connect it directly to a 7

Also has a built in HO track gauge

75C Continous / 150C Brust

Kato 20-861 N Scale Single Track Viaduct Set Variation V2 Track RZR Rey Parts they work similarly to oversizedKato 20 861 N Scale Single Track Viaduct Set Variation V2 Track Send your trains soaring with the V2 variation set, which elevates a single track Unitrack line onto realistic viaduct trackage. It's one of the most dramatic upgrades you can make to a starter layout trains climb above the tabletop for multi level scenes and true over and under operation. As part of Kato's V series system, the V2 follows standardized Unitrack geometry and snaps together