Choice the fused silica as the main raw material, made using modern ceramic processing technology, mainly used in dental alloys, , gold,silver,copper brass and other high temperature melting alloys, high temperature over 2800 degrees, high , corrosion resistance, high strength, high heat resistant, high shock resistance. The graphite crucible set choice the fused silica as the main raw material, made using modern ceramic processing technology. Shock and Corrosion Resistance:This crucible has strong corrosion resistance to acid and alkaline solution, and has chemical stability and thermal shock resistance. Good Thermal Conductivity: All raw materials are carefully in multiple links. Has good thermal conductivity, saves fuel, saves money and is environmentally friendly Specification: Graphite Crucible Set Color: black+silver Material: metal+graphite Main Application: Mainly used in dental alloys, , gold,silver, copper brass and other high temperature melting alloys. Package Contents: 1 x quartz melting crucible 1 x tongs 2 x graphite stir bar 1 x rectangular graphite crucible 1 x cylindrical graphite crucible Only the above package content, other are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real . The measurement allowed is +/- 1-3cm.