The opener was recommended by friends who bought it a long time ago. Since now there are a lot of canned goods with a built-in key for opening, we had to wait until we needed to open a regular can. The knife slips, clings poorly and, accordingly, cuts poorly, and this is with the opener handles fully reduced. The second and third times are the same. Banks vary in size. Somehow I opened a jar of condensed milk, the edges are sharp. For me personally, the most convenient is the usual "beak" type…