Toilet Seat Fitting Tool - Universal Toilet seat Installation Key, Toilet Seat Repair Wrench, 10/13/17mm Professional Universal Plastic High-Strength Installation Key (1 Pack)

I am revising my previous review. I had incorrectly used it. This item does exactly what it says. Correctly fits, when used properly, my bolts for my toilet. My mistake. This is perfect

Fantastic , worked perfectly on my 16 mm bolts that came with the Mayfair Cassel slow close Elongated toilet seat . It states it works on 10,13.17 mm . Very pleased that it worked on my 16 mm bolts that you can't use a screw driver to tighten you need a wrench like this to install , in which is a breeze to install the new seat when you use the right tool !!!!!!!!!!!!!

This worked fine and I would have given it five stars easily except it came with the smallest tool lodged in the larger end and it was hard to get it out. Took longer to get it apart than to use it. Still, super buy and worked well!

This thing works like a champ! I hated having to tighten the nuts on the public toilet at work. The end fits perfectly and the design makes it so much easier to tighten the nut in a tight space. It's much faster than using your fingers too. It's worth ten times the amount I paid. It's plastic but it's a sturdy injection molded plastic that will stand up to time.

These didn't work for me but may work for you... depends on the type of bolts used.

Great tool makes job faster.

Didn’t work as good as described Quality is a hard plastic material

The bolts and screws were rusted on my old toilet seat and I couldn't get them out with a wrench. I was sure I'd have to call a plumber but decide to give this one a try, and darn if it didn't unscrew those rusty bolts with minimum effort. So, I found this well worth the money -- a pleasant surprise.