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Specifications: Material: stainless steel Overall Length: 25cm/10inch Color: silver Net Weight: 310g Cylindrical Graphite Outer Dia.:40 mm/1.57inch Inner Dia.:30 mm/1.18inch Total Height:40 mm/1.57inch Inner Height:35 mm/1.38inch Square Graphite Bulk density ≥1.82 g/cm3 Electric resistivity ≥9 μ Ω m Bending strength ≥45 Mpa resist compression ≥65 Mpa particle ≤43 um(0.043 mm) Size: 7.2 x 5.7 x 1.2cm/0.28 x 0.22 x 0.05inch Quartz Melting Crucible Capacity: 150g Material: Quartz Outer Diameter: 57 mm/2.24inch Inner diameter: 43 mm/1.69inch Height: 20mm/0.79inch Depth: 15mm/0.59inch Net weight: approx. 40g Package Included: 1 x Quartz Melting Crucible 1 x Tongs 1 x Square Graphite 1 x Cylindrical Graphite Note: Manual measuring, please allow 1 ~ 3 cm error, thank you.