40-Pin IDC to 40-Pin IDC Ribbon IDE Cable, 18 Inch Length - Sealevel
40-pin 0.5mm pitch FPC Flex Cable with A-B Connections [25cm long] : ID 4933 : $0.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Raspberry Pi GPIO Ribbon Cable 40 x 200mm (7.8in)
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
RPI GPIO40 300: Raspberry Pi - GPIO cable, 40-pin, 30cm, grey at reichelt elektronik
EBTOOLS GPIO Cable,GPIO,T-Type GPIO Extension Board +40Pin Ribbon Flat Cable for Raspberry Pi 1B+/ 2B/ 3B - Walmart.com
Amazon.com: UCTRONICS Male to Female GPIO Ribbon Cable 40pin 8inch Breadboard Jumper Wires for Connection Raspberry Pi 3 2 Model B B+ w/ 3.5/5 inch TFT Touch Screen LCD Display : Electronics
40 Pin GPIO Cable for Raspberry pi
Amazon.com: SamIdea 2-Pack 40pin Male to Female IDC GPIO Rainbow Ribbon Cable Jumper Wire for Raspberry Pi A+/B+/3 B, 20cm/8" : Electronics
Male / Female Extension GPIO 40 Pins Ribbon Cable for Raspberry Pi 2 / 3 10cm - Audiophonics