SPECIFICATIONS Scale/Gauge On3/On30 Scale Minimum Radius 24" (On3), 18" (On30) Construction Plastic construction, Brass Casting Length 211 mm (8 1/2 in.) Width 53 mm (2 1/8 in.) Height 75 mm (3 1/16 in.) Weight 0.14 kg (5 oz) Features Plastic trucks, Metal wheels, Needle point axle with brass bearing, Detailed underbody, Working couplers, Brass brake wheel, Removable Body, Interchangeable coupler height