Electriduct Speed Nubs Safety Bump Rumble Strips Kit: 2 Black

The ends tend to lift up as the nails go in and I cracked a couple of pieces while putting the nails in as well. Not going to work for me.

Described as made of rubber, this item sure looks and feels like hard plastic. There is no flex over uneven or rounded surfaces. As a rumble strip, IMHO, it's useless unless multiple strips are installed repeatedly over a distance where traffic moves at 40-50 mph, not a garage or parking lot.

I bought it as a parking aid. If my tire touched it, that would tell I was close to the wall and it was time to stop. But even at low speed, I went over it and didn't even feel it. I do have medium profile tires though.

After installing these on a concrete floor they cracked when run over. I'd like to return them and I'm trying to figure out how. It's after the 30 days so the prompt for a return isn't available to click on. Hope Amazon and manufacturer do the right thing.

During the first rain, these speed bumps floated and did not deter the rain water from going into the garage. I was very disappointed.