1-5kg Foundry Clay Graphite Crucibles Black Cup Furnace Torch Melting Casting Refining Gold Silver Copper ss Aluminum Feature: Designed for Melting Gold, Silver, Copper, ss, Aluminum, and more Rated to withstand temperatures up to 1499F - 2900 F (800C - 1600C) Excellent thermal shock resistance, electrical conductivity and thermal conductivity. Good wear resistance, strong lubrication performance and long service life. High purity, high density, high mechanical strength, strong chemical stability. Designed to use with Fuel and Medium/High-Heat Induction Furnaces and Kilns Item Type :Graphite Crucibles Material:Graphite Temperatures 1499F - 2900 F (800C - 1600C) Color:Black Size: A-0.2KG 1- 1KG 2-1.6KG 3-3KG 4-4KG 5-5KG 6-6KG 8-8KG 12-12KG 16-16KG 20-20KG 25-25KG More detailed,please see photo. Wear Occasion : wedding / Proposal / Anniversary / Engagement / Gift Quantity:1 Pc. Note: Size for manual measurement, there may be a 0 to 2 cm error, belongs to the normal phenomenon. And due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package includes: 1 Pc x Graphite Crucible.