1. Brass column, safe and durable, with strong conductivity 2. Anti-corrosion, anti-aging, high-temperature, impact-resistant shell 3. Engineering plastic, IP44 protection grade, waterproof and dustproof design 4. Material: engineering plastic 5. Protection class: IP44 6. Three cores: blue 220-250V 3P (2P+E ), which means live wire + neutral wire + ground wire 7. Four cores: red 380-415V 4P(3P+E), means three live wires + ground wire 8. Five cores: red 380-415V 5P (3P+N+E), which means three live wires + neutral wire + ground wire 9. Current: 16A, 32A 10. Size: about 12.2x4.3cm/piece for three-core 16A, about 13.8x5.7cm/piece for three-core 32A, about 12.2x4.9cm/piece for four-core 16A, about 13.8x5.7cm/piece for four-core 32A pcs, five-core 16A about 13x5.5cm/pc, five-core 32A about 14.3x6.2cm/pc