General Purpose RC Series Wheel Chocks are composed of durable rubber that makes them strong and safe in industrial applications. The RC models are resistant to damage from UV, moisture, salt and oils. Their traction design grips the tire and road and will not cause tire or pavement damage. The chock design also allows either side to be positioned against tire. This series of chocks is built to suit a variety of applications in the construction, utility and other commercial industries. RC815 GENERAL PURPOSE WHEEL CHOCKS are designed for "over the road" trucks and trailers and loading dock facilities. They are composed of durable rubber that make them strong and safe in industrial applications. These chocks are resistant to damage from UV, moisture, salt and oils. Their ribbed pyramid design grips the tire and road and will not cause tire or pavement damage. The chock design also allows either side to be positioned against tire. RC815 Wheel Chocks are built to suit a variety of applications in the construction, utility and other commercial industries.