Cable reels are used in industry and by tradesmen. They extend electrical connections, for example for hand-held electric tools. Depending on the protection class, they may be suitable for outdoor use. Versions with cable lengths of up to 50 metres make it possible to use electric devices almost anywhere in large industrial halls and office buildings. Practical features such as carrying handles, wall fixtures or overheating protection make they more convenient and safe to use. Cable reels with CEE plugs are specially designed for industrial applications with three-phase alternating current.