Looking at keys tells nothing about the security of a lock. That key could be operating in a warded lock and not a pin tumbler lock. The multiple bolts look great, unless they are going into a wooden doorjamb. The jamb becomes likely to fail.
Steel jambs in masonry openings and a steel door are about as solid as you can get for forcing. The jamb will not spring very far (I worked for an FD once and we had serious problems with these), and a good dead bolt goes far enough into the jamb to allow for any slight (less than 1/2 inch or so) of spring.
Steel jambs in masonry openings and a steel door are about as solid as you can get for forcing. The jamb will not spring very far (I worked for an FD once and we had serious problems with these), and a good dead bolt goes far enough into the jamb to allow for any slight (less than 1/2 inch or so) of spring.