A heat-treated NiTi wire with enhanced flexibility and great resistance to cyclic fatigue. Blue heat treatment provides superior strength while maintaining flexibility to negotiate all canals. Kit contains: - 1 x #17/08 - 19 mm. - 1 x #13/03 - 31 mm. - 1 x #20/04 - 31 mm. - 1 x #25/04 - 31mm. - 1 x #30/04 - 31mm.