Surely there is for more money even wertigere reinforced bolt, as has already been mentioned here, but more security there at that price otherwise, the offer of 200, - Euro is top, as well as the fitter certified, the PR2700 is the front door more considered to be sufficiently and provides good protection against burglary, alone, the presence of an armored lock deters potential burglars. The key has the VdS Class B (good!), But the closure was initially a little hakelig, but got better after treatment of the lock with WD40. If at us should be successfully broken because the bolt failed, I will contact you again. But now he gives a good sense of security, we can leave with a clear conscience the apartment and know that as soon no one breaks with us. Alone the massive closing shows that the bolt is not overcome, rather you have to aufflexen the door.