The Würth Elektronik 61300211121 WR-PHD is a two-position, single-row, straight through-hole male pin header on a 2.54 mm (0.100 in) pitch, intended for board-to-board or cable interconnects.
Manufacturer product page Its common practical uses are a two-wire low-voltage power connection or a removable configuration jumper; neither contact has an intrinsic power, ground, or signal function.