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Building circuits just got easier with these tiny circuit boards that make all those weird parts fit into a standard solderless breadboard. The pins are labeled, and each board has a scribble strip so you can remind yourself what it’s for. The Switch Crouton will fit a wired or PCB-pin DPDT sub-mini toggle switch. Add your own switch or get an on-on, on-off-on or on-on-on from us. Please note: the switch crouton will not work with two SPDT sub-mini toggles side by side. Assembly Instructions: Solder two 4-pin headers on the bottom of the board (make sure they’re straight) Solder the switch on the top of the board Enjoy!