PMC Supplies LLC #6-8 Kg ProCast Foundry Clay Graphite Crucibles Cup Furnace Torch Melting Casting Refining Gold Silver Copper Brass Aluminum ProCast by PMC Supplies #6 - 8KG Foundry Crucible With Pour Spout Designed for Melting Gold, Silver, Copper, Brass, Aluminum, and more Rated to withstand temperatures up to 1560F - 2912 F (850C - 1600C) Designed to use with Fuel and Medium/High-Heat Induction Furnaces and Kilns Outside Dimensions - 6.5" Dia. x 8" Length - Inside Dimensions - 5.25" Dia. x 7.25" Depth