index bound prince extended 40 pin gpio header Generator Hound Wander
GPIO Ribbon Extension Cable for HATs and Mini HATs
2x20 pin Female GPIO Header for Raspberry Pi 3/2/B+/A+ - ... | Little Bird
Extra-Tall Push-Fit Stacking GPIO Header for Raspberry Pi - Double Shroud | The Pi Hut
2x20 40-Pin GPIO Extended (Stacking) Header from BurgessWorld Custom Electronics on Tindie
40 Pin GPIO Extension Cable for any 2x20 Pin Raspberry Pi [150mm / 6 long] : ID 4823 : $2.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Simple Guide to the Raspberry Pi GPIO Header - Raspberry Pi Spy