100 Better Crafts Square 1.5" Mirrors - Can Be Used in Many Craft Projects & Mosaics. 1.5 inch small square mirror tiles. These mirrors are a great addition to any mosaic craft project, scrapbook layout, greeting card, and much more! Pack of 100 mirrors - 1.5 inch - 2mm thick. Can be etched or painted on for unique design applications. Perfect for use indoors or outdoors.