LUORNG D Cell Battery Holder 4PCS 1.5V D Cell Battery Case Container with Wire Leads, D Size Battery Box

LUORNG D Cell Battery Holder 4PCS 1.5V D Cell Battery Case Container with Wire Leads, D Size Battery Box

Alligator Clips Electrical, 20PCS Preminum Test Leads with Crocodile Clips, 5 Colors Jumper Wires Kit with Testing Probes for Electrical Testing with Dual Ended Insulators for Circuit Connection

10pcs Single Knife Switch:Used for Physics Laboratory,School Electronic Experimenting,Great for Demos Teaching Basic Principles of Electricity & How a Simple Circuit Works