Made of material for lasting use. the hydrocarbon chain of the flowing fuel molecules so that the fuel structure molecules will generate specific resonance effects under the catalysis of the neodymium compound. Disordered and disordered fuel molecule becomes a neatly arranged motion straight line, so that the fuel combustion becomes full and effective. Save fuel,more miles per gallon. 10% - 30% fuel saving, increase ignition efficiency, Low rotation and high horsepower and torque output. Are you looking for a professional, yet affordable Fuel Saving ? Are you in search of a sturdy, tool that can do multiple jobs at once? If yes, look no further! Our professional Fuel Saving must meet you needs. It is one of the choices . Quantity:2Pcs Colour:Blue Material:Metal Size:6x4x4cm Package Contents: 2 x Magnetic Fuel Saver Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.