Glass Bead Slow Cooling Ceramic Fiber- CM Ceramics Brand This 8# 1 Inch 2400 F. High Quality Ceramic Fiber Insulation Blanket for Glass Beads 2 Cut Ceramic Blankets are Easier to Use Than Bending a Larger Blanket Perfect for Most Types of Lamp Work, Propane Forges for Blacksmiths, and knife making Wear An N(95) Rated Dust Mask When Cutting. Proudly made in the USA.