Material: Metal Color: Silver Ring Thickness: 3.5 mm/1.38 inch Ring Dia: 42 mm/1.65 inch Inner Dia: 30 mm/1.18 inch Ball Dia: 30 mm/1.18 inch Total Length: 275 mm/10.83 inch Weight: 580 g/1.27 lb/20.4 oz  (3 Balls)