Amazon.com: DEPEPE 30 Pcs 40 Pin 2.54mm Male and Female Pin Headers for Arduino Prototype Shield: Industrial & Scientific
Amazon.com: Yohii Female Pin Headers 2.54mm Pitch 8 Pins Single Row - Pack of 50: Home Audio & Theater
Arduino A000040 Stackable Female Header for Shields - 1x8 and 1x6 Position, 23 mm H(Pack of 3): Bike Brake Levers: Amazon.com: Industrial & Scientific
Amazon.com: 2 x 20 (40 Pin) Extra Tall Female 0.1 Inch Pitch Stacking Header Compatible with Raspberry Pi A+/B+/Pi 2/Pi 3 Extra Tall Header (Pack of 8): Home Audio & Theater