Steel rack gear,gear rack AGMA 5-12 grade MOD:0.4-30M OD ... 4000mm Material:stainless steel,steel,iron, alloy steel Steel rack gear,gear rackWe can produce all kinds of gears according ... carburizing and quenching,hardening and tempering,highfrequency quenching,and so on.8.Quality:finest material and process,good connection9.Package: ... other countries.Wormly welcome to visit our factory. Steel rack gear