a.35/38mm piston b.Material: aluminum and stainless steel T304 c.Color available: red, black, blue, silver, purple etc. a.35/38mm pistonb.Material: aluminum and stainless steel T304c.Color available: red, black, blue, silver, purple etc. d.Accessories: flanges, bolts and gaskets adjustable Tial 40MM/38MM/50MM/60MM turbo charger Wastegate