This is a standard DC power jack that can be mounted on a chassis for your next hobby electronics project. Measures 2.1mm.
$129
Build a model car that runs on hydrogen gas using a unique reversible fuel cell!
$89.99
Build a model green house and 9 other green energy-related devices with this great kit!
$10.99
This is a classic demonstration toy of the powers of magnetic fields!
$48
Deluxe Cherry Wood 17in Galileo Thermometer
A beautiful desk toy for your favorite person’s office!!
$27
MuscleWires Project Book and Sample Kit
This project book and sample kit introduces you to shape-memory alloy technology!
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