Marshalltown 10400 is an Enforcer Portable Texture Sprayer. The 2.5 gallon tank capacity allows you to hold more texturing mud then a standard hoper. With a flow rate of up to 1.75 gpm you get greater control over the amount of mud released. It utilizes one air hose that can be used with any standard air compressor. The Compressor does all the work for the pressurized tank and the hopper gun. The piston seal aids in cleaning the inner tank wall as the mud is used up eliminating unneeded mess when the job is finished.