... Low generation of noise & heat Extra ordinary functionality Agricultural Tractor Gears MaterialC45, 20CrMnTi teeth finishcutting, grinding,hobbingheat treatmenttempering ... and quenching, Nitriding, annealing precisionup grade7standardASTM, BS, IS, AISI How to orderWe are metal gear, sprocket ... so do contact us for furthur information. Agricultural Tractor Gears