40 Pin female header, 2 rows of 20 pins each. 2.54mm / 0.1″ spacing
This header has extra long pins which is why it is called a stacking or stackable header – one common use is for creating a raspberry pi “hat”, where the header is soldered to a board that connects to the male pins on the raspberry pi, and these pins then protrude enough for another female connector to “stack” on top.
This listing is for TWO headers.
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