Specification Brand : B07L7GXFBV BulletPoint1 : Country of Manufacture: CHINA; Material: PVC BulletPoint2 : Net Weight: 160g; Package Content: 2 x Corrugated Tubing BulletPoint3 : Model: FD20MM, FD21.5MM; Main Color: Black BulletPoint4 : Tube OD: 20mm/0.8", 21.5mm/0.85"; Tube Inner Dia: 15mm/0.6", 16.5mm/0.65" BulletPoint5 : Tube Length: 2.2M/7ft ItemName : Aexit 2pcs 21.5mm Electrical Boxes, Conduit & Fittings 20mm OD PVC Flexible Corrugated Tubing Cable Electrical Boxes Conduit 2.2M ItemTypeKeyword : electrical-conduits Manufacturer : Aexit Material : Aluminum ModelNumber : modle NumberOfItems : 10 PartNumber : f190412ae011457 ProductDescription : There are 2 different sizes Corrugated Tubing included in the package, and 2.2Meters long for each.Both of the Internal and External is Corrugated.Very flexible - perfect for working in confined areas.Reduces the number of required fittings and permits the installer/user to make smooth, tight turns. Saves time, labor and cost.PVC tube with raised exterior PVC helix for strength and flexibility.Coils easily for storage and transportation., sun, ozone (UV) and chemical resistant.Smooth inside - permits unrestricted flow, reducing operating costs.Designed for use with barbed or insert fittings and appropriate clamps.Crush and impact resistant.Widely use for machinery lathe, electircal equipments, food machinery and equipment, automatic instrument, electirc motor, cable protection, etc.