High quality graphite material with high density, firm and durable to use.Good thermal conductivity, high temperature resistance and corrosion resistance, very practical.Also be used as graphite crucible melting into non-ferrous metals, test analysis, as the ingot mold and other purposes.Different size for you to choose to meet your need.Wonderful casting and processing accessory, suitable for gold, silver and hardwear, etc.Specification:Material: GraphiteColor: BlackSize:L: Outer: 250x30x20mm/9.84x1.18x0.79 inch Inner: 230x15x15mm/9.06x0.59x0.59 inchM: Outer: 120x25x17mm/4.72x0.98x0.67 inch Inner: 100x10x10mm/3.94x0.39x0.39 inchS: Outer: 90x18x12mm/3.54x0.71x0.47 inch Inner: 80x8x8mm/3.15x0.31x0.31 inchPackage Includes:3 Pieces Graphite Ingot MoldsNote:1. Due to the light and screen difference, the item's color may be slightly different from the pictures.2. Please allow 1-3mm differences due to manual measurement.