Product fine, but be careful with the threads

Have the part ordered in the faith, so to be able to replace an identical-looking, broken part in my faucet. Although the diameter wrong, but right and left threads are not created equal. The right thread of this article is much finer and did not fit in my case. Neither ILLUSTRATION still Item description suggest this difference.

I could, however, the Kunstoffelement - the actual valve flap - use in my old valve and have it get so close again. This part was astonishingly consistent although wahrschreinlich not standardized (one white, extruded triangle with a closed bottom and circular ring close up). Unfortunate that the manufacturers want, although each part sell five times and therefore produce versions with different sizes and threads, but make the inner workings to reduce product costs the same.