Amazon.com: 2x15P 2x15 Pins 2.54mm 0.1" Female Header Black - Pack of 10: Home Audio & Theater
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
Break Away Single Row Round Headers Machine Pin Female 2.54mm 40 Pins Gold Plated(pack of 10) - - Amazon.com