... forks switch 1.Healthly:Non-toxic, environmental 2.corriosion resistant, heat preservation 3.customize for you butterfly handle gas ball valve1.Model ... ,CW617n,CuZn39pb3,CuZn40pb2,CW3770,DZR.Ball: Brass as above,lead free brass,Brass ball.chrome coated,Iron ball chrome coated.Stem : Brass Stem ...