Elenco Snap Circuits UC-40 Upgrade Kit SC-100 to SC-500
Get the additional parts and manuals to take your Snap Circuit Kit to the next level. UC-40 Converts your Snap Circuits SC-100 to the Snap Circuits SC-500. Includes 42 new parts including AM radio components, transistors, ICs, capacitors, resistors, recorders, a meter and more. 400 more projects.