Features:Choice the fused silica as the main raw material, made using modern ceramic processing technology.Mainly used in dental alloys, platinum, gold,silver, copper brass and other high temperature melting alloys.High temperature over 2800 degrees.High purity and high strength, durable in use.High heat resistant, high shock resistance and corrosion resistance.Specifications:Crucible TongsMaterial: stainless steelOverall Length: 25cm/10inchColor: silverNet Weight: 310gCylindrical GraphiteOuter Dia.:40 mm/1.57inchInner Dia.:30 mm/1.18inchTotal Height:40 mm/1.57inchInner Height:35 mm/1.38inchSquare GraphiteBulk density 1.82 g/cm3Electric resistivity 9 mBending strength 45 Mparesist compression 65 MpaAsh 0.1 %particle 43 um0.043 mmSize: 7.2 x 5.7 x 1.2cm/0.28 x 0.22 x 0.05inchQuartz Melting CrucibleCapacity: 150gMaterial: QuartzOuter Diameter: 57 mm/2.24inchInner diameter: 43 mm/1.69inchHeight: 20mm/0.79inchDepth: 15mm/0.59inchNet weight: approx. 40gPackage Included:1 x Quartz Melting Crucible1 x Tongs1 x Square Graphite1 x Cylindrical GraphiteNote:Manual measuring, please allow 1 ~ 3 cm error, thank you.