... Flexible Conduits Metal Flexible Tubing, Metal Hose, Metal Liquid Tight Conduit 1/4"-4" I.D.:7.7-100.6mm, O ... .D.11-111.5mm Metal Flexible Conduits, Liquid-tight flexible conduit,.corrugated conduit,machine pipe,metal conduitMaterial: Galvanized steel strip, PVC sheath ... inside structure makes it easy to thread.2 Highly waterproof,insulated,chemical resistance.3 PVC sheath,adding in composition of fire ...