... deep well pump Impeller:plastic,Motorcoil:copper,Aluminum,Bearing:home/C&U,Shaft with Rotor:45#,AIS304,220v/50hz. submersible deep well pumpTwo ... –pole induction motor (n=2850r.p.m)Insulation class BProtection ... IP45 Material:Motor casing:Aluminum.Impeller: plasticMotor coil:copper/ aluminum ...