The first of several add-ons for the CutterPillar Glows. This tempered glass is 20 times harder than regular glass. It is impervious to paints, inks, glues and heat. What doesn't wash off will easily scrape off with a razor-blade. The soft rubber feet will keep it stable on any surface. The grid is designed for all your crafting needs. Quilters can iron their fusibles and turned edges. Unlimited uses!