This is a kit that allows you to turn your favorite coasters into acrylic keychains. I have kept it stored in a dark place since I purchased it. The coaster case and keychain are included. It supports circular coasters up to 90mm in diameter. The regular price is 500 yen (+ tax), but I will sell two sets for 770 yen. Instant purchase welcome ️⭕️ Price negotiation ️⭕️ (Small amounts are possible.) Selling individually ️⭕️ (I will sell one for about 450 yen.) Thank you.