3D Wooden Puzzle Marble Run Modules DIY Kit Rolling Ball Race Machine ModelProduct Details Handmade from natural solid wood: High quality, eco friendly material offers a premium, artisanal feel and lasting durability. Complete kit (glue & batteries not included): Includes everything you need to build the machinewooden parts, marbles, motor and moreexcept for glue & batteies, which must be purchased separately. For continuous operation, you can opt for a power adapter (sold separately). Power supply (100 240V, 50 60Hz, sold