This product come in a pack of 5. These sleeves and caps are for 1/2″ stainless-steel peg and require a 5/8″ hole to be drilled for installation. These sleeves are for concrete installation, but they can be installed on any solid surface including wood decks, asphalt, or stone surfaces (marble, granite, tile, etc. The caps provided will fit into the sleeve when you take down your mesh removable safety fencing. These caps will prevent the sleeve from filling up with water, dirt, and debris. These sleeves can be used to replace old sleeves that have deteriorated over time or if you would like to change your fence location.