This is a 10-pin socket with 2mm pitch that mates with the popular WiFly radio from RN Networks or the XBee radio from Digi. Use this small part to avoid having to solder your precious radio to a PCB. You'll need two of these sockets to connect to all 20 pins on the XBee.
These 0.1" spaced female headers are perfect for building your own Raspberry Pi add-on modules. These PTH headers are arranged in 2 rows of 13 and mate with the Raspberry Pi GPIO header. For more information, check out the drawing below. The plastic portion is 8.5mm in height and have 3mm length pins.