Review (4/5): Good,not perfect
This product is not the best of quality but it does the job. My husband has b unions and has very thick calluses on the ball of his foot. The razor blade does the trick to remove them. The razor blade stays in place as long as the pressure comes from the bottom. Pressure from the top and it will come out. The protective cover is difficult to get on and easily comes off. I did not feel in danger of getting cut when using, it is a sturdy apliance.