Nylon-Coated Double Wire -o
Made of good quality steel with nylon coated;
Full range of specifications: Diameter from 3/16 inches to 2 inches;
Available colors: White/black/silver/red/blue etc
2: 1 & 3: 1 pitch available;
Available in box (A4, letter & legal size);
Suitable for all kinds of notebook and diary book and calendar binding.