... copper or nylon and so on 3.OEM Steel gear black oxide, 1)Standard: European or American standard ... timely delivery and great customer service 1. Material: stainless steel steel alloy steel and brass etc2. Processing:forged,casting,heattreatment,or quenching ... electric motors and controls, pumps, snow throwers, winches and gear boxes, hoists and jacks, outboard motors, machine tools, speed reducers, ...