... ss304 stainless valve balls 2.Hardness:HRC58-62 3.Grade:G100 4.1/2",3/4" 1,1/4' 1,1/2' 1/2",3/4" 1,1/4' 1,1/2' Thread Ball Valves Stainless Steel 304 1.steel ... ball specification: 1)material:AISI 1006, AISI ... Ball valves for liquid and gas ect 4.Enjoy more of the steel ball product images: