Overall well built but one improvement would give it five stars. I bolted it directly to a flat concrete floor but it wobbled. I thought the floor may have had a high spot but did not. Looking down into the bolt hole cavities after re- bolting, the problem was revealed. The bolts were tight. It was the bottom of the save flexing that was causing the wobbling. The bottom of the safe either needs to be made of a thicker gauge of steel or beefed up to prevent wobbling.