The mold 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 purchasingDifferent usages: graphite casting ingot mold 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 mold and other purposes; Considering the size of this product, it is more suitable for small-capacity metal meltingWorks well: nice thermal stability for withstanding 2000 degrees Celsius, fast cooling, nice corrosion resistance to strong acid and alkali, nice thermal conductivity properties which highly shorten the casting time and save energy; It keeps its natural graphite of various physical and chemical properties; This mold is Perfect for making several bars at the sameReliable material: mainly made of graphite, these molds are with hardness 51 HSD, 89 MPA compression resistance, 48.7 MPa flex resistance, bulk density 1.86 g per cubic cm, ensuring that the metal purity will not be affected during metal refining; Nice thermal conductivity and corrosion, well heat transferNice temperature resistance: graphite crucible let the products more durable than ordinary material products, which can withstand more than 2000 degrees Celsius high temperature.size:72 x 57mmMaterial:graphitecolour:blackPackage Contents:1 x Graphite Casting Ingot MoldOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.