Color: Silver Ring Dia:3.3 cm/1.3 inch Ball Dia: 2.0 cm/0.79 inch   2.5 cm/0.98 inch Ball Weight: 215 g/0.47 lb/7.6 oz Thickness: S: 1.3 cm/0.5 inch M: 2.5 cm/0.98 inch Material: Stainless Steel Package: OPP Bag