Wheel Chocks are essential for safely and securely loading and unloading tractor trailers. Wheel chocks are constructed of aluminum, rubber, steel and urethane. Wheel chocks are designed to adhere to concrete or pavement in muddy, sandy or rainy conditions. Wheel chocks comply with OSHA Standards 1910.178(K)(1) & 1910.178(M)(7) when used with stabilizing jacks. OSHA recommends utilizing 2 wheel chocks per trailer. For all your loading dock product needs, Labelmaster provides dock bumpers, docklevelers, dock lifts, dockplates, dock ramps, dock seals, dock lights and much more.