10pcs 1*40pin 2*40pin 2.54mm Single Row Double Row Straight Male Breakable Pin Header Strip Connector - Connectors - AliExpress
Pin header - Wikipedia
Color Coded Header for Raspberry Pi : ID 3907 : $1.75 : Adafruit Industries, Unique & fun DIY electronics and kits
Connectors - Headers | All Electronics Corp.
2.54mm SMT SMD Pin Header Connectors | Smolex
18PCS 40P Pitch 2.54mm Male Color Single Row Pin Header Connector 1*40P 6 Color Black White Red Yellow Blue Green Each 3pcs|header wire|pin postpin header - AliExpress
20pcs 40p 2.54 mm Pitch Male Pin Header - Blue | Open ImpulseOpen Impulse