3′ 4½″ diam., 9 oval spokes, rectangular inner rim, apparent tread 3½″.
Hub 11½″ face dia., ½″ out from the tyre.

Source: works drawing.

Casting: 32.1 mm tread dia., 26.5 i/d, hub 0.4 mm out from the tyre.

Casting prices and stock . Netherlands loco sets, price list

Scans of a casting in a set for 4-6-0 NBDS 31/NS3500 class 4-6-0 NBDS 31/NS3500 class.