Sensitive cables are laid in conduits. The conduits are resistant to damaging materials such as oils or solvents and they also protect against fire. There are different accessories for fastening conduits. These include tubing clips, which are used to secure the conduits to tubing nipples. Tubing holders fasten the hoses to walls or another solid supporting surface. Accessories for conduits are used for many applications, e.g. tubing holders in industrial switch cabinets.