12V/24V DC Portable Cast Iron Transfer Pump for Diesel Biodiesel and Kerosene Cast iron material for pump body. 6ft power cable with brass battery clips,Protection grade reached to IP55. Relief valve (venting valve) inside the pump head will efficiently protect the motor when overload. The rotating blade is made of powder metallurgy steel, it's more durable then common steel material. Aluminium alloy material for inlet & outlet connecter and filter.