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4 Ounce Graphite R9 R9D-10 Furnace Crucible Made from High Density Fine Grain Graphite. Dimensions: 1.2" Length / 1.18" Bottom / 1.21" Top. Custom Size Crucibles str Available upon request! Product Recommendation: Our Mini R9 Crucible Tongs work very well with this product. Crucible tongs allow you to handle the crucible at high temperatures. We also recommend using graphite stir rod. We always combine and reduce shipping on multiple purchases! Capacity: Holds 4 oz of pure gold (approximately 2 oz of silver).