Wire spools 3:1

- Pitch 3:1 - wire spool
- Sizes:
1/4" - 6,4 mm. - up to 40 pages
5/16" - 7,9 mm. - up to 60 pages
3/8" - 9,5 mm. - up to 75 pages
7/16" - 11 mm. - up to 85 pages
1/2" - 13 mm. - up to 100 pages
9/16" - 14 mm. - up to 120 pages