The Quickfit Container Accessories Heavy Duty Caravan & Motorhome 50mm Levelling Slabs are designed to hold up to 45 tons of weight, making them suitable for use with caravans and campervans. Made from durable plastic and stackable for easy storage, these levelling slabs are manufactured in Germany and come in a pack of four. With dimensions of 40cm x 40cm, these grey slabs are a practical and reliable solution for stabilising and levelling your caravan or motorhome.