Mini O-Ring for Watch Crown for Waterproof WatchesColor: blackMaterial: RubberContains 12 popular size  :1.4mm x 0.6 x 0.4    1.45mmx0.65 x 0.4  1.5mmx0.5 x 0.51.5mmx0.6 x 0.451.6mmx0.6 x 0.5   1.6mmx0.6 x 0.71.7mmx0.7 x 0.71.8mmx0.8 x 0.51.9mmx0.9 x 0.62.0mmx1.0 x 0.5   2.4mmx1.4 x 0.52.8mmx1.8 x 0.5Package included:1 Box Assorted Mini O-Rings