Hose level series 2550.25 m PVC hose 8×1.5 mm. To align two horizontally opposite points exactly to the same level is often a problem, especially if they are located in different rooms. Using a tubular spirit level, you can easily solve this problemisting of: PVC hose, crystal clear, a funnel and two plugsnsions of the hose: inner diameter×wall thickness: 8×1.5 mm.