In Electric Tube Cleaner, the brushes or other cleaning tools are rotated through a tube at tip of flexible shaft. Simultaneously water gets injected, hence loosen deposits leaving tubes cleaned. Flexible shafts ensure use in bent tubes. All models consist of tool storage box, single direction foot switch, mobile dolly. 2 direction foot switch is optional.All units are available with following specifications : 115 v 60 Hz, 115 v 50 Hz - 9 Amps 220 v 60 Hz, 220 v 50 Hz - 4.5 AmpsWhile ordering, please mention electric specifications..