I have purchased 4 packs now (8 holders/stoppers as two come in a pack). I tried one out first, with zero issues. They are very high quality, a little heavy, and come with everything you need (minus the screw driver/drill). I previously purchased the magnetic door holders, but in an office, guests/employees are too rough. The metal breaks from slamming making them unusable. I found these and I cannot see them "breaking". Sure, if someone yanks with all their might, they possibly could pull it ouSee full review