Current Unun and Balun Enclosure – CUBE Chokes™ are available with balanced output (eyebolts, top or side studs - in which case they are called "baluns") or with unbalanced output (top stud and ground - in which case they are called "ununs")

In all cases they have a 50 ohm input and a 50 ohm output and act as feed line chokes which suppress the coax braid current and thereby "balance" the current in baluns with balanced output.

CUBE baluns and ununs have higher choking impedance (better common mode rejection) than simple snap on or slip on choke types.