["1/2/3KG Foundry Clay Crucibles Cup High-Temperature Gold Silver Metal Smelting Crucible Casting Cups\n\nFeatures:\nWell thermal stability: according to the using conditions of crucible snap heat and cold.\nWell corrosion resistance, impact resistance performance, to ensure the reliability of product quality.\nWell resistance to strong acid, strong alkali.\nGood heat transfer performance of crucible: for greatly shorten the melting for time and save energy.\nAnd certain strain resistance to the thermal shock, quenching.\nLong service life.\n\nSpecifications:\nMain material: \nThe weight of gold that can be loaded: 1KG, 2KG, 3KG (optional)\nThe inner diameter of the crucible:\n1kg: 38mm\n2kg: 44mm\n3kg: 50mm\nThe outer diameter of the crucible:\n1kg: 50mm\n2kg: 55mm\n3kg: 60mm\nThe outer diameter of the large ring:\n1kg: 65mm\n2kg: 72mm\n3kg: 75mm\nThe inner height:\n1kg: 115mm\n2kg: 140mm\n3kg: 150mm\nThe outer height:\n1kg: 125mm\n2kg: 155mm\n3kg: 170mm\nItem weight:\n1kg: 140g / 4.9oz\n2kg: 330g / 11.6oz\n3kg: 360g / 12.7oz\nPackage size:\n1kg: 15 ×10 ×10cm / 5.9× 3.9 ×3.9in\n2kg: 17.5 ×10 ×10cm / 6.9×3.9 × 3.9in\n3kg: 20 × 10 × 10cm / 7.9 × 3.9 × 3.9in\nPackage weight:\n1kg: 160g / 5.6oz\n2kg: 350g / 12.3oz\n3kg: 380g / 13.4oz\n\nPackage list:\n1 × Crucible"]