Color: Silver Cage Size: 3.2 * 2.4 cm/1.2 * 0.9 inch Material: Stainless Steel 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) 55mm/2.0 inch (XL)