STERLING V3 Submersible pumps are the best pumps for 4½" Dia bore wells. All STERLING V3 submersible pumps having copper rotor and excellent design for more discharge of water and less power consumption. Most of the domestic consumers are happy with STERLING V3 Submersible pumps because there is "Maintenance Free" and it having long life. In this way STERLING V3 Submersible pumps has been recognized as No. 1 Pump in India by our consumers.