The Amphenol 87052-412HLF is a 12-position, dual-row unshrouded pin header from the BERGSTIK® II series, on the standard 0.100" (2.54mm) pitch. It's a through-hole solder-terminated board-to-board interconnect — the kind you see on a motherboard or add-in card where a mating receptacle needs a rigid pin field. The contacts are square male pins in phosphor bronze with a 100.0µin (2.54µm) tin plating on the mating surface, and the black UL94 V-0 rated housing keeps it safe inside enclosed equipment.
The 0.770" (19.56mm) mating pin length gives good reach through a shrouded receptacle or stacking connector. Overall contact length is 0.990" (25.15mm) with a 0.120" (3.05mm) solder tail, so the board standoff is determined by the mating receptacle's insulation height.