Binding Wire 1.Made of good quality steel with nylon coated 2.Wide choice of colors-8 standard colors 3.In box and spool Nylon-Coated Double OO Binding Wire - Made of good quality steel with nylon coated; Full range of specifications: diameter from 3/16 inches to 2 inches; Wide choice of colors-8 standard colors; 2: 1 & 3: 1 pitch available; Avaible in box (A4, letter & legal size) and in spool; Suitable for all kinds of notebook and diary book and calendar binding.