This pack included 41 units of most commonly used Pin-headers. They are very suitable for your project on breadboard/protoborad, take few back and enjoy prototyping!
These headers are made to work with the Arduino Uno R3, Leonardo and new Arduino boards going forward.
These headers are made to work with the Arduino Main Board, Arduino Pro, and the Arduino Mega. They are the perfect height (±10.5 mm) for clearing the USB-B connector and great for stacking multiple shields.
Machined Pin Header, Female 40 pos. machine socket
40 pins 2.54mm rightangle female header
hooked header strip 40 x 1
This is a 10-pin socket with 2mm pitch that mates with the popular XBee radio from Maxstream.
Male strip 40x2 way, 0.1" pitch (2.54 mm)
Male strip 40x1 way, 0.1" pitch (2.54 mm)
Single row of 40-holes, female header. Can be cut to size with a pair of wire-cutters. Standard .1" spacing. We use them extensively in our SparkFun Original boards. They mate very well with break away male headers. Please note: You will probably lose one pin with each cut.