Mr CircuitLab 1 Bulk Replacement Parts - (Use the Back-Arrow to go to the previous Menu)
1101-B00 Solderless Circuit Board (400 connections) $3.95 (also for use with MC1-SET)
Mr Circuit Technology
$3.95
The Original Mr. Circuit I Lab Replacement Parts Kit for Lab 1 #1101 -PARTS $15.90
Mr Circuit Technology
$15.90