N Female to N Female 4 Hole Flange, DC to 11GHz PN: A-NF-NF-489
N Female to SMA Female Adapter, 4 Hole Flange PN: A-NF-SMAF-331
N Female to N Female Adapter, 4 Hole Flange PN: A-NF-NF-288
N Female to N Female Adapter, 4 Hole Flange PN: A-NF-NF-072