American Scientific Chain Reaction Magnetic Accelerator | Rocket-Shaped Desktop-Sized Magnetic Cannon for Physics Demonstrations | Includes Wood Mini-Barrels and Steel Marbles
Fielect 4Pcs DIY Magnetic Speaker 2W 8 Ohm 40 x 20mm (L x W) Rectangle Shape Replacement Loudspeaker
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Fielect 4Pcs DIY Magnetic Speaker 2W 8 Ohm 40 x 20mm (L x W) Rectangle Shape Replacement Loudspeaker
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