The 51103-0200 is a 2-way 1-row PicoBlade? Wire-to-wire and Wire-to-board Receptacle Housing made of polyester with positive lock. It mates with 51198 housing, 53375, 53426, 53517 and 53608 headers. The crimp housing is suitable for signal, wire-to-board and wire-to-wire applications. This 51103 series receptacle housing can be used with 50351 and 50752 crimp terminals.