This is a genuine NOS piston for a Suzuki TS185 Sierra or DS185 from 1977-81. It has a .50 mm oversize and fits the front of the vehicle. The part number is 12110-29300-050 and it is made of steel. The color of the piston is silver and it is considered a vintage part. The package includes one unit and there is no manufacturer warranty included. This item was manufactured in Japan and is compatible with Suzuki brand vehicles.bx31