The Retractable Clothesline System by Household Essentials includes 5-Clothesline and Single Post Assembly. The 5-Line unit ample fresh air drying space. With all this, you have everything you need to get started air-drying your clothing and linens. The retractable clothesline mounts to a stationary vertical surface. The post assembly is the second anchor, the piece you set up to hold your clothesline when you are ready to hang your clothes out to dry. This retractable system releases easily for smooth retraction into a protective aluminum case that keeps the line dry and clean. A tightening knob keeps lines taut and tangle free. It's the complete system so you can start saving money by and enjoying the freshness of line drying.