The structural foam core is wrapped in a rugged textured coating that helps protect against scuffs, common chemicals, oil, and the normal abuse that comes with garage work. The surface provides grip at both contact points, helping the tire climb smoothly while helping the ramp stay put on concrete, sealed floors, epoxy, and typical shop surfaces. Because the ramps have no metal body, there is nothing to rust or gouge finished floors. The 60-inch kit gives you a steady, cleaner-feeling platform for regular maintenance, with enough height to make underbody work feel much less like a punishment.