Gikfun 7 Kinds of 2.54mm Breakaway PCB Board 40 Pin Header Kit for Arduino Proto Shield (Pack of 48pcs) EK8402 20pcs 1 X 40pin, 5pcs 2 X 40pin Male header, 3pcs 3 X 40 Pin 2.54 Breakaway Male header For Arduino Prototype Shield 5pcs Yellow 1 x 40pin 2.54mm Single Row Breakaway Male Pin Header 5pcs HEADER PIN 2.54mm 1x40 Angle Single Row Connector for Arduino Breadboard 5pcs 2.54 Stackable Female Header 1x40Pin For Arduino Project 5pcs 2.54 Stackable Female Header 2x40Pin For Arduino Prototype Board 20pcs 1 X 40pin 2.54 breakaway Male header for Arduino Proto Shield 5pcs 2 X 40pin 2.54 breakaway Male header for Arduino Prototype Shied 3pcs 3 X 40 Pin 2.54 Breakaway Male header For Arduino Prototype Shield 5pcs HEADER PIN 2.54mm 1x40 Angle Single Row Connector for Arduino Breadboard 5pcs 2.54 Stackable Female Header 1x40Pin For Arduino Project 5pcs 2.54 Stackable Female Header 2x40Pin For Arduino Prototype Board 5pcs Yellow 1 x 40pin 2.54mm Single Row Breakaway Male Pin Header Packed in a plastic box. This pin header kit is an ideal connector for the PCB board and circuit board, used widely in the computer and breadboard.