Radial Piston Air Motor Retrofit Kit for 5 gallon (18 L) or 10 gallon (38 L) pail agitators. Pail cover, agitator shaft and blade not included.This kit makes it easy to replace an existing rotary vane motor on a 5 gallon (18 liter) or 10 gallon (38 L) pail agitator with a radial piston air motor. For wood (top coat, primer) and general finishing applications Radial piston air motor driven agitators are reliable, simple and cost effective solutions for low to medium speed (<500 rpm), low to medium viscosity (<1000 cp) agitation applications. Air line lubrication not required Easy to maintain