Check the listing for details. Rigid Round Pipe 16mm ID 20mm OD 0.35m Dark Grey High Impact. Condition: New. Listed at 12.20 USD. What is this? rigid pipes are mainly in water pipes. The inner wall of pipe is smooth and does not limit the flow of liquid. The hard pipe is suitable for outdoor use and can be used in direct sunlight. The pipes are also widely used in DIY, cable sleeves, etc.What will I get?Round pipe, is in size of : 16mm/0.61-inch inner dia, 20mm/0.79-inch outer dia, 0.35m/14-inch total lengthIn the package of: 1pcs x Rigid PipeIs there any advantages of the product? material, smooth surface and uniform pipe wall; High impact resistance and easy processing; With good electrical insulation, it can be used as cable sleeve to protect and tidy electrical wiresHow to use it?Steps of installation: 1.Prepare a pipe of an appropriate size; 2. Cut to the length you want; 3.