1. copper water impeller 2. 35 years casting experiences 3. CNC, all types of laths 4. OEM 5.ISO9001,export entitlement water impeller1. Copper ... casting, brass casting, sand casting, die casting, gravity, high pressure die casting, low pressure die casting,copper foundry.2 ... will gladly to service you, our skype:donytrade High quality 2 inch water impeller