These D battery holders can house two D 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.
Have hours of fun with this colorful remote controlled flying saucer!
Provides the power to execute all the basic electrostatic demonstrations on an energetic and dramatic scale with up to 350,000 volts!
Start a great hobby in electronics with this state of the art electronics project lab!
Investigate the most important phenomena in biology, chemistry, and physics by conducting more than 100 fun experiments!
Learn all about the science of light, optics and visual perception with this wonderful kit!
Check out this fun family game of competitive bioengineering!