The fly fishing spool Large Arbor for nymph line fishing for Vivareli reel has one knob and one tippet loking button with 3 silicone rings, both removable with screws to fight big trouts with the reel instead of pulling the thread with the hand, preventing breakage and loss of fish. It has an adjustable brake by turning the prisoner with flat screwdriver. To introduce and/or remove the reel spool, press on the lever clamping safe. We recommend to fill the spool with 100 metres of nylon 0.12 – 0.18. Maximum spool capacity: 70 meters of 0.50 nylon.