Gowoops Prototype HAT Shield for Raspberry Pi 2 3 Model B Suitable for Raspberry Pi 2 3 Model B It's easy to get enough contact with the soldering iron that you can solder components in quickly All holes mimic the familiar connection breadboard, very easy to use Adopt 0.1 inch (2.54mm) prototype welding hole connection chips, resistors, LED, potentiometer Package included: 1x HAT Shield, 1x 2*20 pin Female Header, 4x Screw, 4x Screw nut, 4x Pillars