Wooden Butterfly Mechanical Model Kit Product Type_GraviTrax Dual throttle knobs give you

Dual throttle knobs give you control of two locos at the same time and makes consisting easy

Kit also includes (decals

These concrete retaining walls are cast in high-density Hydrocal

Inflatable tube for compact storage

Wooden Butterfly Mechanical Model Kit Product Type_GraviTrax Dual throttle knobs give youDetails: Get ready for a new and exciting challenge! The UGears Butterfly comes as 168 pre cut pieces that are ready to be assembled into natural beauty. The butterfly not only looks elegant on its own but can also be wound with a simple rubber band motor to bring it to life with gentle wing beats that beautifully imitate the flutters of its living counterparts. No glue, tools, or external power sources are required; the kit comes with everything