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Material: Copper M=10 d=2.2m Z=220 Haisheng is specialize in manufacturing gears,shafts and gearbox, we candesign itmake it according to the demands of clients.We can supply all kinds of gears ,such as US, Asian, European cars,buses ,trucks and so on.And we can supply OEM services 1:Product range: 1) lather components 2) Gear wheel families 3) Engineering gear 4)agriculture machine components 2:Features: Standards: European, American, Asian and automotive manufacturer standard Quality issues: 1) Dimensions, materials, critical characteristics reports and related drawings will be enclosed together with cargos every time 2) Offers process audit report before mass production 3) International standard 45 steel 3:Packing and shipment: 1) Carton, or upon customers' specifications 2) Label: standard, or upon customers' specifications 3) Shipment: contract items We can finish ur projects if u kindly send me the drawings ,samples and the exact size. Looking forward ur contacting!