Non-stick pan when smelting metal, long service time, no loss of precious metal. Features: Well thermal stability: according to the using conditions of graphite crucible snap heat and cold. Well corrosion resistance, impact resistance performance, to ensure the reliability of product quality. Well resistance to strong acid, strong alkali. Nice heat transfer performance of graphite crucible: for greatly shorten the melting time and save energy. And certain strain resistance to the thermal shock, quenching. Long service time. Specifications: Main Material: Graphite Load Capacity: 1KG / 2KG / 3KG(optional) Crucible Inner Diameter: 1kg: 38mm; 2kg: 44mm; 3kg: 50mm Crucible Outer Diameter: 1kg: 50mm; 2kg: 55mm; 3kg: 60mm Large Ring Outer Diameter: 1kg: 65mm; 2kg: 72mm; 3kg: 75mm Inner Height: 1kg: 115mm; 2kg: 140mm; 3kg: 150mm Outer Height: 1kg: 125mm; 2kg: 155mm; 3kg: 170mm Item Weight: 1kg: 140g / 4.9oz 2kg: 330g / 11.6oz 3kg: 360g / 12.7oz Package Size: 1kg: 15 * 10 * 10cm / 5.9 * 3.9 * 3.9in 2kg: 17.5 * 10 * 10cm / 6.9 * 3.9 * 3.9in 3kg: 20 * 10 * 10cm / 7.9 * 3.9 * 3.9in Package Weight: 1kg: 310g / 10.9oz 2kg: 405g / 14.3oz 3kg: 445g / 15.7oz Packing List: 1 * Graphite Crucible