... /4" 1,1/4' 1,1/2' Thread Ball Valves Stainless Steel 304 1.steel ball specification: 1)material:AISI 1006, AISI 1008 ... . General industry for automobile, motorcycle, bicycle manufacturing, special bearings & micro – ball for the electronics industry. 2. High accuracy & low noise motor ... appliance bearings 3. High - speed, low noise special bearing 4. Ball valves for liquid and gas ect 4.Enjoy more of ...