Qunqi Prototype HAT Shield for Raspberry Pi 3 2 B+ A+ Fit For Raspberry Pi 3 / 2 / B+ / A+ Prototype HAT Shield,All holes mimic the familiar connection breadboard, very easy to use Material: PCB,Design your own expansion version, highly customized circuit to dress your personal PI 2, A +, B + Adopt 0.1inch (2.54mm) prototype welding hole connection chips, resistors, LED, potentiometer Size:66mm*56mm,Red Color Prototype HAT Shield Prototyping board for Raspberry Pi 3 2 model B , Compatible with A+/B+. You can place 0.1inch (2.54mm) prototype chip, resistors, LED, potentiometer, etc. More +3V,+5V and GND hole Can add SO8 chip such as for EEPROM Design for Pi HAT, attach custom circuitry and otherwise dress for Pi A+, B+, with this prototyping HAT kit 1x HAT Shield 1x 2*20 Female Header 4x Screw 4x Screw nut 4x Pillars