It is made of original Japanese tungsten steel to ensure the hardness meet the original factory requirement, without deformation. Nozzle inner hole polished by imported precision equipment, main body is made of imported steel which be dealt with heat treatment, good abrasion resistance. Nozzle head made of tungsten steel, drill steel, ceramics and other materials, durable and never be white. Nozzle with exquisite appearance, laser engraving LOGO. And the working life time more than 6 months.