Product advantage: 1.Optimize atomization 2.Strong r&d capability 3.Strictly quality control Product material: high speed steel Service:fast delivery with best services All parts warranty time is one year, in the warranty time if the goods not ok, we will send you new ones or compensate.Goods can be sent in 3 to 5 working days. The packing can be bosch, denso, zexel, delphi, cat, lucas, stanadyne, ambac, seven, caterpillar, cummins , yanmar, dp and so on. Or upon your requirement.