Small: 16.5 cm, 17 cm and 18 cm track for ball bearing substructure, dimensions 267 x 189 mm, distance LL 120 mm, hole diameter 45 mm
Large: For substructure with ball bearings, gauge 23 cm and 28 cm, dimensions 295 x 150 mm, distance LL LL 118 mm, hole diameter 48 mm
Large XL holes: For substructure with ball bearings, track distance 23 cm and 28 cm, dimensions 304 x 177 mm, distance LL 130 mm, hole diameter 65 mm
Material: cedar wood
