... wire: high quality nylon coated wire2, color of our metal spiral coils: black, white, blue, red, yellow, pink, gold, silver, ... used for notebook, diaries, calendars, catalogue ect., 4, nylon coated spiral binding wire withstand extrem temperture5, we have passed ROHS AND ... experience can solve customer's various problemThe specification of metal spiral coilssize(inch)diameter(mm)wire gauge(mm)1/4"60 ...