Hefei Sunber Autoparts Co., Ltd is a professional export company of auto parts which including piston rings,pistons,liners etc. We have our own plants for piston rings, piston,liners etc. Piston Ring ROCAM 1.6 Engine contains 3 pieces of piston rings which includs TOP ring,2nd ring and the oil ring.The diameter of it is 82.07 mm.The oversize of it is updated accordingly.The material of it is steel.