Kryston silkworm the kryston silkworm is a ultra fine beautifully supple braid which remains firm favourite throughout the carp world and still delivers the goods since its conception silkworm has constantly evolved throughout the range of different braking strains kryston silkworm available in 4 breaking strains 6lb 8lb 15lb 25lb 20 meters per spool white 6lbs