Hi density polyballs are used for predator angling to lift baits, make buoyant leger link, paternoster rigs and are also used as markers. The 4in poly ball can be used as a small buoy for buoy rigs on stillwaters. Eggs can be used for winch rigs, made up as floats or markers. Hi density polystyrene is more buoyant and tougher than ordinary polystyrene. Sizes: Polyballs ¾ in diameter up to 4in Polyeggs 2 ½ in diameter up to 4in (Polyballs also available in mixed packs)