N Female to N Female 4 Hole Flange, DC to 11GHz PN: A-NF-NF-489
BNC Female to N Female adapter, 4 Hole Flange PN: A-NF-BNCF-097
SMA Female to N Female RF Adapter, 4 Hole Flange PN: A-NF-SMAF-239
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