It has the right size and ergonomics, that he is well and firmly in his hand.
It is especially at the top and slimmer than other requires a certain angle as a starting position.
At the beginning is a little game, but once you start to screw by hand right, he pressed firmly and creates the whole round, without need that it pops out and rescheduled are.
The smaller head and the metal ring he remains exactly in the track and does not penetrate deeper than necessary.
Processing the page so that it is hardly dirty and accordingly hardly needs to be cleaned - a very hygienic thing.
The Lurch works so clean that you can then slide your finger along the rim of the can without getting bloody.
Conclusion. With the sophisticated technology of Newt can be with little power each can open without having to, or someone else been injured her.