These AA battery holders with wires can house 4 AA batteries, and you will find they are excellent for use in any hobby or science project. Each holder includes wire leads for easy hook-up. Recommended for electronics applications, science fair projects, and more! Set includes 10 holders.
Easily assemble a working alarm motion detector!
See the solar system in action!
This glass Erlenmeyer mug makes an excellent gift!
This magic bird defies gravity before your very eyes!
Learn how solar cells transform light into electrical energy with this great kit!
Build 20 different solar powered models with unique building pieces, controlled by an RC handset!