399 piece stem simple machines base set homeschool educational building blocks lego style compatible Colour:399Pcs No Box The built-in holder is drip-proof

The built-in holder is drip-proof and odour-resistant

overall dimensions are approximately 31

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399 piece stem simple machines base set homeschool educational building blocks lego style compatible Colour:399Pcs No Box The built-in holder is drip-proofA 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