This small investment could save you big time down the road. These small and compact wheel chocks reduce the risk of trailer roll. The doughnut-shaped chock keeps jack wheel firmly in place. Constructed of long-lasting, high-impact polymer material. Fits most trailer wheels. Includes:
I was a little disappointed in them. They were lighter weight than I thought they would be. I am using them but the boat slides a little when the angle is steep.
Had planned to use these as chocks for my boat. They are too lightweight and flimsy. May be OK for a jst ski trailer on level ground, but not for a boat. Returned them.