Butterbeer Tank Grow your Harry Potter collection with additional rolling stock celebrating the magical movie moments, characters and for the first time - BUTTERBEER! © & ™ WBEI. Publishing Rights © JKR. (s25) SKU: 2529160 Dimensions: Dimensions: 4" in Length, 3 1/2" Wide Gauge: O Gauge Minimum Radius: O27 Power: Pull & Play Manuals Find the latest manuals in our support section. Replacement Parts Buy any replacement parts in our support section. Contact Contact a service station to fix your product