Who does not know, is wondering what this opener is different from others. So, the normal cut the can to within the margin. The box itself is safe to handle, but the lid is on the edge sharp and dangerous. Then there are those who cut off all the box upper part. Then, the lid may be well to handle, but the can has up a dangerously sharp Rrand. This, however, Silit professional Opener cuts the fold of the cover by exactly half. The cover can now stand only with the built-in lid pliers. But nowhere is a sharp edge, and you can even cover the Restarting. This is awesome, but unfortunately its price.