VEVOR elektrische afvoerontstopper, 400 W, 1400 tpm, afvoerontstopper, 20 m x 16 mm en 5 m x 9,5 mm veerkabel, 0,4 m x 12 mm flexibele veer en 6 snijmessen, voor buizen met een diameter van 50-110 mm

Hello, This product was delivered with 20 m x 16 mm spring cable with 16 mm cutter head interface for 75–110 mm pipes. The cable seems to be too hard to pass through bends of around 50 mm pipes. Another product that is similar in cable diameter, that is, ---- VEVOR Drain Cleaning Cable 66 FT x 5/8 Inch, Professional Sectional Drain Cleaner Cable with 7 Cutters -- is mentioned suitable for 20 mm pipes. Can you please let me know which product is really suitable for smaller pipes that is <50mm?