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25mm x 50m
Grade A high efficiency polycrystalline voltaic solar cells
Overall diameter: 68mm
Bosch SDS ensures effortless and safe saw blade changes within seconds
When placed correctly in the sections
Polydron Engineering Class Set 30410 25mm x 50mDemonstrates engineering principles and the workings of simple machines 250 pieces with various components as shown in the key. Includes excellent workcards. Build the following 14 models: Cable Car, Gear Toy 1, Gear Toy 2, Chairspinner, Chairoplane, Big Gear Toy 1, Big Gear Toy 2, Four Cylinder Engine, Gearbox, Crane, Gyro, V8 Engine, Clock, Vertigo. 3 to 4 models can be made at a time. These excellent sets contain the latest innovations including
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