1、Made of high-purity graphite, suitable for casting ingots of gold, silver, copper and other non-ferrous metals. 2、Has good thermal conductivity, which can greatly shorten the melting time and save resources. 3、Strong acid and alkali resistance, good corrosion resistance, excellent thermal stability, can withstand high temperatures of 2000℃. 4、Can be used for experiments and smelting of non‑ferrous metals. Such as gold, silver, copper, aluminum, lead, etc.. 5、It can also be used as graphite crucible for smelting non-ferrous metals, test analysis, and as a key casting mold. 1 x Graphite Mold Item Type: Graphite MoldMaterial: GraphiteModel: BF17Overall Size: Approx. 6.5 x 6 x 1.6cm / 2.6 x 2.4 x 0.6inHole Size:Small Square Approx. 1.8 x 1.8 x 0.8cm / 0.7 x 0.7 x 0.3inLarge Square Approx. 2 x 2 x 0.8cm / 0.8 x 0.8 x 0.3inLarge Circle Diameter Approx. 2.2 x 0.8cm / 0.9 x 0.3inSmall Circle Diameter Approx. 2 x 0.8cm / 0.8 x 0.3inUses: Used for Casting Ingots of Gold, Silver, Copper and Other Non-Ferrous Metals