Orvis Clearwater Spare Spool - Add an extra Clearwater spool to your bag and set yourself up with a second fly line option when the on-water situation calls for a change. Rig extra spools with different weight lines for a quick, economical way to use the same reel frame on different-weight rods. If you are fishing only one rod, use interchangeable spools to switch quickly from a sink tip streamer rig to a floating line when the dry fly bite turns on. Features Extra Clearwater spools are an economical and efficient way to access more line options on the water; Great way to save space on the water or while traveling; Designed to fit corresponding Clearwater reel frame; Clearwater II for line weights 3-5, 5.6 oz., 3.4in diameter; Clearwater III for line weights 5-7, 6.2 oz., 3.7in diameter; Clearwater IV for line weights 7-9, 6.7 oz., 4in diameter;