Hurricane Single Tentacle Whip. The Hurricane Single Whip is the most aggressive whip in the Hurricane System. The Hurricane Single Whip can be ordered in 18″ or 26″ length with high pressure whip material. Use the Hurricane Single Whip to clean rectangular steel duct work, or large diameter round duct work.  Use a Hurricane Line (CAS148/CAS149) or compatible to interface this item with 1/4″ standard interchange airline fittings.