... from 3/8" to 4" 3. Various types available Conduit Connector Description: 1. Material: zinc die cast (chrome-plating, nickle-plating ... standard, compactness structure, male thread.5. Good tightness, quakeproof capability, waterproof capability, dustproof capability6. Can produce NPT standard, GB standard,EN ... ,steel tube,mainly used for electrial area.8. 90 degree type is also available.