High-quality weight with a hook fitted through the center allow you to hook weights together in tandem or use them one at a time.
Pass-through hooks are included on both sides of the weight!
Learn how solar cells transform light into electrical energy with this great kit!
Get this great introductory chemistry kit for your favorite young scientist!
This kit focuses on teaching children about electricity and how electronic devices work!
Every kid needs one of these spheres!
Easily assemble a working alarm motion detector!
This adapter-powered butterfly uses Flexinor wires to create a realistic visual effect!
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