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!
This kit allows to build up to 3 different robots!
Cool new Pi tee featuring ultra soft and light blue 100% cotton shirt.
Get this great introductory chemistry kit for your favorite young scientist!
This is a classic demonstration toy of the powers of magnetic fields!
An unconventional ball-tossing, head-catching challenge for 2 players or teams!
Use this laser pointer for any professional presentation!