Good for its price, extremely economical. However, the result is not excellent and requires time of use even if the problem in the heel is not intense

I have it just a few days so I don't know its durability, however its "file" is not so satisfactory. For its price, you can say it's decent, but overall mediocre.

This particular device does a relatively good job, except that it should not be placed under the faucet even though the instructions say that there is no problem and you can do it. If this happens, the springs rust and the head does not attach after four months of regular use. It will not last more than six months.