25 Socket (Female/Female), PEEK Gender Adapter. Gender Adapters are offered for use with Accu-Glass Products Subminiature-D feedthroughs with male pins on both sides, to correct pin numbering to the standard Subminiature-D configuration. (Pin 1 reverses position from vacuum side to air side due to the male to male configuration.) Ultrahigh vacuum gender adapters are made of UHV compatible PEEK material. Contacts ARE included with the gender adapters.