This could fairly easily be a good product, but as sold it doesn't have enough leverage to cut through nails. It needs either a shorter pin or a raised contact point to increase the amount of leverage, because otherwise there's nothing excessively wrong with the product. I've resorted to using a key to improve the pressure it can exert, which seems to be working.
They are a lot bigger than I thought, and didn't cut my toes nails very well at all. Cannot use then, I guess you get what you pay for, they are very cheap for a reason!