Reduzierhülse für Schwimmbadpumpe 25mm auf 15mm

Due to the fact that my pool pump produced too much pressure for my solar panels I created this thing. That´s rapid prototyping! Less than 3 quarters of an hour... and it fits perfectly! Should work with most pumps with an outer diameter of 31.5 mm and inner diameter of 25mm. Hope anyone of you can use it!