***Multiple models are linked here：
https://www.ebay.com/itm/295280813957

Graphite Foundry Crucibles are made from a combination of graphite and clay, and are used for melting copper, brass,gold, silver, copper aluminum, zinc, tin and other metals.

  Their thick inner walls can handle direct heat and open flame foundries. They can be used with our propane melting furnaces as well as a standard torch method.Rated to withstand temperatures up to1 560°F - 2912°F - (850°C - 1600°C).

  15kg Crucibles can load 15 kg brass or  5.5 kg aluminum or 18 kg silver.