#8 10KG Foundry Clay Graphite Crucibles Cup Furnace Torch Melting Casting Refining Gold Silver Copper Brass Aluminum PMC Supplies Clay Graphite Foundry Crucible Outside Dimensions - 7.5" Dia. x 8.75" Length - Inside Dimensions - 6" Dia. x 8" Depth 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