Gikfun 2 x 40 Pin 2.54mm 2 Row Breakaway Male Pin Header for Arduino (Pack of 10pcs) EK1531 Needle long 17MM, about 7.6MM on each side 2x40 Pin breakaway Straight header x 10pcs Straight Pitch 2.54mm Needle long 17MM, about 7.6MM on each side 2x40 Pin breakaway Straight header x 10pcs Straight This pin header kit is an ideal connector for the PCB board and circuit board, used widely in the computer and breadboard