The Guardian Fall Protection "Retractable Swivel Adaptor" easily attaches to any swivel top such as the Guardian Fall Protection "Standing Seam Roof Clamp" or "CB Swivel Top." The durable steel attachments hold up to jobsite abuse and powder coated for long lasting durability. This adaptor is easily removed for use with smaller retractable lifelines. This product was engineered specifically to fit a Guardian Edge Retractable.