Heating Wires Prebuilt Coils Prebuilt Clapton Coils Tiger Coils Hive Coils Twisted Coils 118mm Length 9 Different TypesShape: Pre built coilsHeat treatment:Annealed (soft)Melting temperature:1500¡ãC (2730¡ãF)Maximum operating temperature:1400¡ãC (2550¡ãF)Density:0.256 lbs. per cubic inchSpecific heat capacity at 20¡ãC (68¡ãF):0.46 kJ/kg K (0.11 Btu/lb¡ãF)Size of different heating wires:1. Clapton wire: 26GA+32GA2. Hive wire: (30GA+30GA)*2 3. Tiger wire: 26GA+0.2*0.84. Quad wire: 28GA*45. Twisted wire: 26GA*26. Flat twisted wire: 0.2*0.8*27. Mix twisted wire: 0.2*0.8+26GA8. Fused clapton wire: 28GA*2+32GA9. Alien wire: 0.3*0.8+32GA