... & best services 3 various materials and surface treatments Item Noprecision machined gearsMaterialsiron,aluminum,steel,copper,plastic,carbon steel,nylon,bronze,soldder ... center machining,drilling,turning,grinding,tapping,mould design and processing,casting,sheet mental working etc.Delivery7-15 days after T/T ... you at once we receive your valued detail specification. precision machined gears