Features: 1. Suitable for Raspberry Pi 4B & Raspberry Pi 3/2 Model B/ B+/Raspberry Pi 1 Model B / Pi 1 Model A+. 2. PCB Dimensions: 57mm x 66mm, Thickness: 1.5mm. 3.To kick off the HAT party, we have this proto inspired plug in daughter board. It has a grid of 0.1" prototyping soldering holes for attaching chips, resistors, LED, potentiometers and more.. 4. The holes are connected underneath with traces to mimic the solderless breadboards you're familiar. There's also long power strips for +3V, +5V and Ground connections to the Pi. Packing included: 4x PCBs 4x 2x20pin connectors 1x Screw Set

Package Includes: 4x PCBs, 4x 2x20pin connectors, 1x Screw Set. The holes are connected underneath with traces to mimic the solderless breadboards you're familiar. There's also long power strips for +3V, +5V and Ground connections to the Pi. To kick off the HAT party, we have this proto inspired plug in daughter board. It has a grid of 0.1" prototyping soldering holes for attaching chips, resistors, LED, potentiometers and more. PCB Dimensions: 57mm x 66mm, Thickness: 1.5mm. Suitable for Raspberry Pi 4 Model B & Raspberry Pi 3/2 Model B/B+/ Raspberry Pi 1 Model B / Pi 1 Model A+.