Lynn Manufacturing Insulating Fire Brick, Heat Insulation Block, Low Thermal Conductivity, 2.5" x 4.5" x 9", Pack of 12, 2600F-Rated, for Kilns, Forges, Furnaces, Soldering, 3126T

Key features

• Great insulator with low thermal conductivity and very low weight
• Easy to shape, cut, and carve with wood working tools
• Used for kilns, forges, furnaces, knife making, PMC metal clay firing, jewelry casting, or jewelry soldering block
• Specifications: 2300F rated, weight 2.7lbs., 9" x 4.5" x 2.5”, alumina silica refractory ceramic clay brick
• Well packed in bubble wrap to ensure delivery in good condition