The BSWR Series Steel Wheel Riser Ramp is designed to elevate semi-trailers to loading dock height for maximum serviceability during loading and unloading. Each unit is equipped with fork slots for a easy transporting with a forklift. These are sold and priced each as an individual unit. They are designed to be stackable for storage in confined spaces when not in use. The Wheel Ramps are designed to be in compliance with OSHA's requirement of a 10% maximum grade of ascending or descending loaded fork trucks.