Spiral Copper Tube 10 M Stove Pipe 18x1 mm 200 mm with Inner Diameter Of About 207 mm : Amazon.de: DIY & Tools
Kupferrohr Innenbürste Rohrbürste 18 mm : Amazon.de: Baumarkt
Pipetec Press Fitting including Connector Copper Pipe 16x2 – 15 mm Pfuek 1615, Certified According to German DVGW Press Fitting : Amazon.de: DIY & Tools