N Female to N Female 4 Hole Flange, DC to 11GHz PN: A-NF-NF-489
N Waterproof Bulkhead Female to N Female adapter PN: A-NF-NF-071
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