Check the listing for details. 4" x 10" Perforated Casting Flask Vacuum Casting Wall Flanged with Base. Condition: New. Listed at 119.41 USD. The casting flask is made of refined 304 stainless steel, with high hardness and strong impact resistance. It can withstand the impact of metal liquid gravity and daily operation collision, and has excellent high temperature and corrosion resistance. It can resist the erosion of metal liquid residue, gypsum powder, casting additives and other substances during the melting process, and is not easy to rust or oxidize.The vacuum casting is formed by an integrated forging process, featuring a dense structure and high strength. The cup body has uniform wall thickness, free of sand holes and weld seams. The perforated design ensures uniform flow of molten metal and smooth suction, achieving optimal airflow, enabling perfect casting.