The Preston Invictus Spare Spool from Preston Innovations is available in three sizes to suit different casting distances and fishing styles. The 320 is perfect for shorter casts up to 40m, ideal for light waggler setups and snake lake fishing. The 420 is a true all-rounder, suited for a variety of fishing styles, from commercial feeder setups to natural waggler work. The 520 is designed for long-distance casts of 60-80m, ideal for feeder fishing on both natural and commercial venues.