When connecting with?arcola can?function well， can be installed on model boats and used as?engine power; Also can be used as a decoration; Flywheel diameter: 21.5mm; Shaft diameter: 2mm; Cylinder diameter: 4.5mm.

General
ModelN/A
ColorGolden
MaterialCopper + aluminum alloy
Quantity1Piece
Other Features
Suitable Age12-15 Years?，?Grownups
Dimensions !#!amp!*! Weight
Dimensions1.42 in x 1.38 in x 0.75 in (3.6 cm x 3.5 cm x 1.9 cm)
Weight1.62 oz (46 g)
Packing List
1 x Steam engine model
1 x Wrench
1 x Screw