Material: Metal Color: Siliver Size: 4.7 * 3.5 cm/1.85 * 1.4 Inches Package: OPP Bag The diameter of the ball ring have 3 Size: 40 mm/1.6 inch (S) 45 mm/1.8 inch (M) 50 mm/2.0 inch (L) 55 mm/2.2 inch (XL)