Size - 40X40mm Quantity - 3 Pcs Capacity - 50 gm Melting Carbon Crucibles Melting various metal like gold, silver, copper, aluminum, lead, zinc,brass and other nonferrous metals. High density, Corrosion resistance, High temperature, heat and fast, High thermal shock resistance, Attractive appearance. Ideal For Goldsmiths and Metalsmiths. High density, Corrosion Resistance, High temperature, Heat and Fast, High thermal shock resistance, Attractive appearance. Melting various metal like gold, silver, copper, aluminum, lead, zinc,brass and other nonferrous metals. Features : Graphite crucible is generally used in alloy steel smelting and smelting of nonferrous metals and their alloys. Using Tips: Store in dry place, do not get it wet. After drying the crucible, don't make it touch with water. Be careful not to give a mechanical impact force, not from a fall or impact