Demon Slayer:1 Pcs Plastic Ruler Cute Cartoon Anime Character Printed Straight Measuring Tool Each ruler is crafted for functionality The perfect gift: This is the best gift for the fans of Demon Slayer's animation. I believe they will love it after receiving it A good measuring tool, easy and convenient to use. Clear color allows for a clear view of numbers on the page, with the clear mathematics ruler, you can measure an object easily.