1.Aluminium alloy,styles diversity 2.Anodic oxidation,many kinds of color can be choice 3. Strong,Beautiful,Durable Our company had passed ISO9001:2000 quality management systemcertification.This product adopts the high quality aluminium sections, ischaracterized by good lusterfirmness,durability,light weight, and so on. Can effectivelylessen oil consuming. Motorcycle tire valve cap