The 4774-1 Coil Gun Probe is for use with Nu-Calgon's Popular Coil Gun (4774-0) in the Cleaning of Air-Cooled Condenser Coils. The Coil Gun Probe is a Time Saving Accessory with its 90 Degree Direction of Spray that Allows Cleaning from Inside the Coil. In many Cases, this can be Accomplished without Removing the Top Cover of the Outdoor Unit. Also, the Tool Provides Easy Access in Tough to Reach Locations to Discharge Debris and Emulsified Grime in an Outwardly Direction from the Coil