The has 3 rectangular slots and 2 round holes, suitable for melting and casting bars or coin metals, gold, silver, copper and other alloy tool steel, please check the size before purchasing.Reliable material: mainly made of graphite, these are with hardness 51 HSD, 89 MPA compression resistance, 48.7 MPa flex resistance, bulk density 1.86 g per cm, ensuring that the metal purity will not be affected during metal refining; Nice thermal conductivity and corrosion, well heat transfer.Different usages: graphite casting ingot can be applied for experiments and smelting of non-ferrous metals, including gold, silver, copper, aluminum, lead and so on, which can also be applied as graphite crucible melting into non-ferrous metals, test analysis, as the ingot and other purposes; Considering the size of this product, it is more suitable for small-capacity metal melting.Works well: nice thermal stability for withstanding 2000 degrees Celsius, fast cooling, nice corrosion resistance to , nice thermal conductivity properties which highly shorten the casting and save energy; It keeps its natural graphite of various physical and chemical properties; This is Perfect for making several bars at the same.Nice temperature resistance: graphite crucible let the products more durable than ordinary material products, which can withstand more than 2000 degrees Celsius high temperature.Colour: BlackMaterial: GraphitePackage Contents:1 * Graphite for casting-3cm.