spiral wire, binding products, metal spiral wire, 1. nylon coated single metal wire 2. 1/4"-1-1/2" 3. various color available

spiral wire, binding products, metal spiral wire,

the specification as follows:

Coil Diameter		Filament Size	Recommended Max Books Thickness	Pitch
Inch	mm	mm	mm	mm/inch
1/4	6.40	0.90	3.40	6,8,10,12 / 1:4,1:3,1:2
5/16	7.90		4.90
3/8	9.50		6.50
7/16	11.10	1.20	8.10
1/2	12.70		9.70
9/16	14.30		11.30
5/8	15.90		12.90
3/4	19.10		15.10
7/8	22.20		18.20
1	25.40		20.40
1-1/8	28.60	1.50	23.60
1-1/4	31.75		25.80
1-1/2	38.10		32.10

colorful metal spiral wire for book binder