... service life , low wear and tear , Noiseless auto/car engine block for mini van and mini truck 1,High quality ... O.D range from 160mm- 430mm.3,We can designed and developed different kinds of clutch disc .4 ... quality toque spring with material 60 Si2Mn,Forged clutch hubs , Anti-rust paper and oil 5,High standard ... transfer torque.7,Long service life , low wear and tear , Noiseless. We hope you can need a ...