Polarized connectors and headers for your perf board/PCB projects. Use these connectors for power connections or any sensor/general connection to prevent users from connecting the peripheral incorrectly or reversed.Headers are available in 2-pin, 3-pin, 4-pin, 5-pin and 6-pin versionsThis is for the male header pins. Be sure to order the matching housing and crimp pins!Pins have standard .1" spacing.