The Perfect Kayak Storage Solution for the homeowner, lakeside installations or if no garage! The Ground Kit consists of two 22" plastic sleeves that will be concreted into the ground and two caps to cover the sleeves when the uprights are removed. The uprights (landscape timbers 3"x 4"x 8' with two beveled sides and two flat sides), shovel and concrete are available at your local garden or lumber store. Be kind to your expensive poly or composite kayaks with basic J-Storage Cradles. Stainless Steel construction, triple rubber padded. Use single purpose wall storage "J" Cradles OR use dual purpose J-Cradles (Basic or Deluxe) to go from car to kayak tree in minutes. In the winter, simply tarp over everything or remove leaving no trace!