This is a standard DC power jack that can be mounted on a chassis for your next hobby electronics project. Measures 2.1mm.
Find the hidden crystals when you open your own geodes from this fun set.
Experience this sphere powered by the sun!
Get this great introductory chemistry kit for your favorite young scientist!
Discover a world of kaleidoscopic effects within this perfectly clear prism of the Light Crystal!
This project book and sample kit introduces you to shape-memory alloy technology!
The Hoberman Sphere expands and contracts with a magical motion so fluid and simple that kids can't help but play with it for hours.