This leg is attached to the furniture item with a 5/16" hanger bolt. Attachment and removal of the leg is easy. The leg is simply turned to the right to install and to the left to remove. HDPE (High Density Polyethylene) is an extremely tough plastic which has high rigidity, good impact resistance, and high tensile strength. These qualities makes its application as a furniture leg very advantageous. This leg comes in a brilliant silver finish which will add style to any couch. Each leg features a rubber base to provide maximum grip and ultimate floor protection. Protect your hardwood, laminate, ceramic, tile, parquet, slate, stone, or marble hard floors by keeping your furniture from moving.