OOK 533710 30-Pound Steel Concrete Picture Hangers, 3-Pack | Steel with brass finish, Includes Bendless masonry nails for brick, concrete, and hard wall surfaces, hangs up to 3 frames

My first attempt barely drove the nail in far enough for the hanger to stay, and it destroyed the drywall on top of the concrete. My second attempt resulted in a bent nail and a crater in the wall from the chisel effect the nail had. Ended up hiring a handyman to drill the wall. If you have very dense concrete, these aren’t great.

We had tried different approaches to hang a heavy wall plaque. These were to easy to hammer into bricks and mortar on the inside of our screened patio but we were able to use two of these to accomplish the task. Still holding

Works exactly like described. I would definitely order again, when I need more.

Went right into solid brick and held up my 20 lb mirror with just two studs. Super great

I have concrete walls and was able to use two of these to hang a large painting that weighs over 15 lbs. Easy to hammer in and very sturdy.