Glass artists and crafters, listen up! If you work with microwave kilns, these ceramic fiber papers are about to make your life so much easier. Each pack comes with 100 round sheets measuring 4.7 inches across - plenty for multiple projects without constantly running out. Made from quality ceramic fiber, these papers create a protective barrier between your glass pieces and the kiln surface. No more worrying about your beautiful creations sticking to the bottom of your kiln! The smooth surface gives your fired projects a clean, professional finish on the back. They're lightweight and flexible, so you can easily cut or shape them to fit your specific needs. Perfect for creating fused glass jewelry, beads, pendants, pottery, and all kinds of DIY crafts. The insulation properties are excellent - they help maintain consistent temperatures while protecting your kiln from direct heat contact. As a one-time use product, you get fresh, clean surface for every project, which means more consistent results. Whether you're teaching a glass fusing class, running a small jewelry business, or just exploring a new hobby, having these on hand is essential. They save you time and frustration, and let you focus on being creative rather than worrying about technical issues. The white color makes it easy to see your work clearly, and the ceramic material can handle the high temperatures of microwave kilns without breaking down. Seriously, if you do any kind of glass work, these are as basic as paintbrushes for a painter - you just gotta have them!