... , stainless steel ball, carbon steel ball, ceramic ball, copper ball, aluminum ball, chromate steel ball, plating steel ball, hollow steel ball ... , stainless steel ball, carbon steel ball, ceramic ball, copper ball, aluminum ball, chromate steel ball, plating steel ball, hollow steel ball ... our factory:From 0.5mm to 50.8mm . We can supply balls as per customers' requests. we can do Grade from ...