Graphite Torch 10 oz Mini Crucible with Base For Melting Casting Refining Gold Silver Copper Scrap Jewelry Made from high-density graphite Measures at 1.5" Outer Diameter x 1.33" Length Tapered Sides for Easy Material Removal Designed for torch applications, not designed to be used in a furnace. Graphite Crucibles are wear parts and will need to be replaced after prolonged use