My driveway is on a decent sized slope with a curb that dips at the bottom. I needed something to help me get my boat up and down my driveway without scratching. This helps me clear my boat trailer by about 1” or so. I just use one for the second trailer tire as it goes up and down the driveway and it seems to do the job. It’s heavier, but still easy enough to carry it when I need to use it. I didn’t want to mount it to the bottom of my driveway.