This is one of the necessary gear which fixed spool user angler should attach with their rod. It can save your finger from pain after casting. And same time you are able to cast few extra yards. A must product for Mackerel fishing. Very helpful in the winter season when your finger is cold and you need to cast maximum distance. galvanised and anti-friction coated. So it can reduce damaging your line and minimize the risk of breaking. Very helpful in the winter season when your finger is cold and you need to cast maximum distance. Completely eliminates damage to the index finger during the cast. Sea/Shore/Beach/Mackerel Fishing Casting Trigger/Bionic finger /Thumb button/Cannon clip/Finger casting aid/Casting cannon Delivery Quantity: 1pcs Product color: black Product size: 65mm*25mm*25mm