20.1mm i/d Nylon Convoluted Sleeving. 20.1mm internal diameter. External Diameter: 24.5mm. Suitable for bundling of wires and protection against abrasion. Resistant to oil, water and petrol. Nylon 6 self extinguishing. Continuous operating temperature -40 C to + 120 C, with short excursions up to 155 C.