The Adjustable Shed Base is specially designed to provide a quick & easy base for your shed. Simply assemble the bearers in the kit as directed & attach each of the adjustable legs. Provided the ground is not more than 100m out of level the difference can be adjusted by moving the sliding discs on the legs & then locking them into place as the base is progressively hammered into the ground. No digging & no concrete to mix. This product is designed specifically for use with any of our appropriately sized buildings, it is not guaranteed to work with buildings from any other manufacturer.