PMC Supplies LLC #1-1 Kg Foundry Clay Graphite Crucible Furnace Torch Melting Casting Refining Gold Silver Copper Brass Aluminum PMC Supplies #1 - 1KG Foundry Crucible Outside Dimensions - 3.5" Dia. x 3.75" Length - Inside Dimensions - 2.75" Dia. x 3.25" 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