399 piece stem simple machines base set homeschool educational building blocks lego style compatible __IMPORT80 1* Practice Mat

1* Practice Mat

Optional 4S or 6S voltage

Frame Structure: Squashed-X

Designed for microphone gamer

Built to last and drain away

399 piece stem simple machines base set homeschool educational building blocks lego style compatible __IMPORT80 1* Practice MatA 399 piece set designed for hands on STEM and simple mechanism learning at home or in the classroom. Self locking ABS bricks give you sturdy, reliable connections so models stay together while you experiment and learn. Parts are compatible with standard small building bricks, letting you mix and match with existing collections for more creative options. Easy to assemble and disassemble ideal for DIY projects, model builds and exploring mechanical