Deltana DSF800U10B 8-Inch Heavy Duty Floor Mount Bumper - Oil Rubbed Bronze Finish for Doors, Gates & Entryways - Durable Metal Protection for High Traffic Areas

We needed up needing to buy a hammer drill to put these in concrete/flagstone but this is a seriously well made product. Also, the side screws that go into the stand to keep it from spinning, go in at about a 10 degree angle which makes installation very tricky. We ended up buying the 6” ones for other doors.