(Universal Size】 The whole pack includes 3pcs. It has 2pcs black cup coasters and 1pcs of the crystal Rhinestone Bling. 2.75 inches diameter and 0.35 inches of the thickness of the cup holders fit almost all of cars. (How to Use】It has a adhesive ring with two sides of the adhesives. By peeling off one side of the adhesive papers and stick it into the bottom of the ring. After that, you can tear off another side of the adhesive papers from the adhesive ring. Just apply the bling ring into the ignition button. This crystal ring can be used in various places ,such as engine start/ stop push buttons, car a/c knobs. it is a great car interior decor 【Super Cute Rhinestone Bling Design】A sparkling design is adopted to provide a great upgrade for your car. The Bling Crystal Rhinestone Design can make your car more dazzling, noble and even a little more girly, it's the perfect car decoration and a surprising gift to your family, friends 【Durable Material】It's made of soft stretchy high quality environmentally-friendly silicone, 2.75in x 0.2in Rubber for enhanced stability, durable,withstand heat-resistant and without peculiar smell. 【Easy To Clean】 Waterproof & dust-proof, keep your cup groove clean and tidy. These car coasters can be easily cleaned and dried if dirty.