Amazon.com: kuosbiu 20Pairs 40Pin 2.54mm Male and Female Pin Header, Straight Single Row Pin Header Connector for Arduino Prototype Shield : Office Products
Amazon.com: Generic Female Header Right Angle 0.1" 6-pin for Arduino and LilyPad(pack of 10) : Electronics
Amazon.com: 60 Pieces Breakaway Pin Header, 40 Pin 2.54mm Straight Single Row Male Pin Header Connector for Arduino Prototype Shield : Electronics
OCR 60Pcs 2.54mm 40Pin Breakaway PCB Board Male Pin Header Connector Singler Row for Arduino Shield Blue Black Green White Red Yellow 6Colors: Amazon.com: Industrial & Scientific
OCR 40PCS 2.54mm Male and Female Pin Header Connector 40Pin Single Row Breakaway PCB Board for Arduino Shield: Amazon.com: Industrial & Scientific
Amazon.com: Arduino Micro with Headers [A000053] : Electronics
Amazon.com: for XBee Shield Adapter Communication Breakout Board Red for Arduino UNO R3 Connectivity XBEE S2C Module with Female Header Pins : Electronics
Amazon.com: Chanzon Pin Header Strip for Arduino Gpio 40 pin x 20pcs Female/Male pins Straight Single Row Square pins Assortment Kit Gold Plated Pitch 2.54mm 0.1 inch Breakaway Used for PCB Connector
Amazon.com: Shield Stacking Header Set Compatible with Arduino MEGA 2560(Pack of 2 Sets) : Electronics