The CTCB0603F-181P from Central Technologies is a power line ferrite bead rated 180 Ω at 100 MHz (1), in an 0603 (1608 metric) package, with a 2 A current rating and 90 mΩ resistance.
The 181PKG from Switchcraft Inc. is a mono headphone phone plug with a 6.35 mm (0.250", 1/4") diameter and 2 conductors, with solder eyelet terminations.