The Grundfos Unilift KP250-A-1 1x110V 50Hz 5m is a stainless steel sump pump with cable float switch, max flow rate 3l/sec and max head 7m, 1 1/4" threaded connections and 10mm solids handling. The Grundfos Unilift KP range are light submersible drainage pumps which can be used for cellars, surface drainage and anything involving slightly dirty water. The pumps are double-sealed ensuring long service life.