In order to connect a cover to an existing roller you will need to purchase a cover to roller strap set. This pack is completely universal and will connect to all swimming pool rollers/reels. They come complete with 10 straps, press fix connectors and a variety of universal fittings for the reel side. These include reel thumb screws, inner wedges and outer wedges which will connect to the much desired slidelock swimming pool roller and reel easy reel system. In addition it is supplied with self tap in screws which will also secure the strap set to other reel systems.