Raspberry Pi Proto Breadboard PCB for Model 3 / Zero 1.3 / 2 / B+ / A+ / B / A (Compatible with General 2.54 Pitch 40p or 26p Header Type) Proto breadboard PCB for any type Raspberry Pi GPIO Six hole pad design to improve the usability (to use general 2.54 pitch 2x20/2x13 pin male header) Gold plated finish prevents oxidation, High quality RoHS ENIG finish for easy soldering All holes are through-plated for strength 1.2 mm diameter drill holes will fit even the biggest leads