An easy-to-use line cleaning tool in the field.Soak the four ruby ??cells inside with a fly line cleaner such as [CFA-111] Shooting Liquid, and attach near the butt of the rod.Fold rods and fly line with main body , 4 magnets inside will hold rod and line stable, then wind fly reel.The four ruby ??cells can be removed and washed, so you can use them in a clean state many times. Weight: 21 g