I bought these to try and clear my kitchen sink, it was running slow... And i was hoping either the plastic or metal tools would clear it... But no luck.
The plastic things bend easily so... They get stuck even when there is no clog. (I tested it in another drain)
And the metal one doesn't fit any drains... The size is just too big! I needed it at home and then i needed it at work and the size is too big to fit into most drains... It's a great idea .. but the idea is worthless if it doesn't fit into any drain.
This kind of item would be worth it in open drains without any entry point or very soft straight drains for the plastic ones.