ALUM TREAD WHL RISER W/ ROLL OF GUARD 60X24X6 This allows the user to safely mount the wheel riser without the fear of going too far. The raised tread surface gives added traction throughout the ascending and descending action. A standard wheel riser is a great asset to have available when working in the shipping and receiving industries. With an aluminum construction, this unit includes a roll off edge guard that acts as a stop point.