... thickness: 0.5-1.5mm SS hollow ball:Diameter: 3.8-50mmthickness: 0.35-2.5mmmaterial: stainless steel 304,316surface handling: radial polishingspec ... : diameter is 33.7, 40, 42.4, 48.3, 50, 60, 70, 80 ... of B/LWe are a special exporter and manufacter of Steel Ball in Hebei,China.Our factory has 1000 square meters. we ...