50 Pack Single Row 40 Pin 2.54 mm Male Pin Header Connector 

Cuttable 
You can cut them, or score them with some electronic tool, like soldering iron, and snap them off; They can be cut to any size if needed. 

Electronic replacement 
It's useful to have extra header pin around to assist to the projects. They are suitable for Arduino, Raspberry Pin or any other electronic project. 
This pin header is an good connector for the PCB board and integrated circuit, apply widely in the computer and breadboard. 

About the product: 
50 Pieces male pin header connector 
Pin pitch: 2.54 mm 
Number of pins: 40 pin 
Single-row; Straight connector 

Package includes: 
50 x Male pin header connector 

Warm notice: 
Small parts, please keep them away from children. Adult supervision is required.