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.
Build a model green house and 9 other green energy-related devices with this great kit!
Build over 60 projects with this deluxe version of the Snap Rover kit!
This project book and sample kit introduces you to shape-memory alloy technology!
Check out this amazing renewable energy science kit featuring the wonders of hydroelectric power!
Check out this high-quality gyroscope!
Build a tumbling robot that gets up right after it has fallen down, without any outside help!