Guardian Industrial Truck Wheel Chock Laminated Rubber 8" x 7.5"

Use this to hold my boat trailer on very steep driveway. I had a smaller wheel chocks that I tried to use but it looked like wheels could accidentally jump over them at any point so I decided to look for bigger/stronger chocks and when I saw those on amazon I knew they will do the job. They are really heavy and the rubber stick to pavement and trailer tires like a glue. Since they are rated to hold in place 50k lbs semi-trucks I feel very confident they will keep my 3500lbs boat/trailer in place.

Best product for money , its solid material

Works great holding a F150 4x4 and a Explorer on a 10% grade driveway.

Heavy and heavy duty.