The Gardner Invisi Link 25lb is a versatile 100% PVDF fluorocarbon hooklink and boom material. It is fast sinking, extremely strong, and virtually invisible under water, which helps it blend in with any lake bed. This material is ideally suited for a multitude of rig applications and can be used with either conventional knots or crimps. It helps to ensure that the rig lays out nicely, giving you a more consistent presentation and reducing the incidence of tangles occurring on the cast. The Invisi Link is supplied on 25m spools and is available in 3 sizes. - 20lb+ (9.1kg+), Diameter: 0.40mm - 25lb+ (11.3kg+), Diameter: 0.45mm - 30lb+ (13.6kg+), Diameter: 0.50mm