The Hardy Averon Cassette Spool offers seamless compatibility with the new Averon Cassette reel and the previous generation Ultradisc Cassette (UDC) reel. Designed for versatility, cassette reels enable anglers to conveniently carry multiple lines and switch effortlessly throughout the day. Durable, lightweight, and precision-engineered, these additional spools allow anglers to setup even more line options.