Gridfinity Breadboard & Raspberry Pi GPIO Cable

The extension board overhang shown in the pictures has been fixed in the provided model. This block should fit any standard size breadboard. As for the GPIO breakout board, it was designed to work with the one from this starter kit: https://store.freenove.com/products/fnk0020 I can't guarantee that it would fit any others, but the hole dimensions are as follows: Small hole:16mm long12mm wide36mm deepLong end:56mm long7mm wide7mm deep