KastKing BackKast Fly Fishing Line Backing Line Posted in Eposeidon Outdoor Adventure Inc., Stores INCREASED STRENGTH – KastKing BackKast fly fishing line backing is woven using thin Store: Eposeidon Outdoor Adventure Inc. Price: $9.99 Buy at Store Related PostsKastKing BackKast Fly Fishing Line Backing LinePiscifun Fly Line BackingPiscifun Fly Line BackingPiscifun Fly Line BackingPiscifun Fly Line Backing