Use this single D battery holder for your next hobby project or science fair project. The holder comes with lead wires for easy connection. Recommended for a variety of electronics applications.
This genuine meteorite is great for the rock collector in your family!
This kit allows to build up to 3 different robots!
A massive mounted set of 100 rocks and minerals found in the US,
Build 20 different solar powered models with unique building pieces, controlled by an RC handset!
Build an electromagnet, an electrical catapult, a doorbell chime, a telegraph, and more with this kit!
This high precision gyroscope will amaze you with rotational speed and ease of precision.