20mm A high standard PVC conduit with reinforced nylon spiral. Fully UL approved, good insulating and cosmetic properites. Excllent flexibility. id 16mm od 19.5mm supplied in 30m coils Colour black. Construction Flexible PVC thin wall conduit with reinforced nylon spiral. Temperature rating -10 to +75 C. Protection rating IP55. Flammability to CEI 23-14/V-1971 with 10 second flame resistance. Class UL 94 VO. Resistance definition Class 2 light 320newtons. Mechanical tensile strenght Class 2 light 320 newtons. 30m in length.