Features [Good conductivity] The electrode cylinder has good conductivity and high mechanical strength [High resistance] The graphite electrodes is acid and alkali resistant, and has strong thermal shock resistance [High quality material] The graphite rod is made of high density extruded graphite rod [High performance] The industry material has good lubricity, high temperature resistance and oxidation resistance [Wide scope of application] Used in metallurgy, machinery, electronics, chemical industry, light industry, etc. High-purity graphite has high temperature, corrosion, oxidation resistance, thermal shock resistance, electrical conductivity. It is ideal material for spot welding machine, carbon rod machine, butt welding machine. Specifications: Material: Graphite Purity: 99.9% Diameter: 10mm / 0.39" Length: 100mm / 3.93" Color: Black Quantity: 5 Weight: 64g(approx.) Density: 1.65g/cm3 Granularity: 0.8 mm Compression Resistance: 30MPa Fracture Resistance: 13.5MPa Ash: 0.3%, Resistivity: 9m Thermal Expansion Coefficient: 2.5(10-6/) Package Includes: 5 x Graphite Rods Note: Please allow 1-3mm error due to manual measurement. Thanks for your understanding. Package List