Binding Capacity: up to about 40 sheets ( 80g/20lb)
Length: About 12" (48 Loops). It can be used with U.S. letter size paper (8.5"x11") Or used with ISO standard A4 size paper (8.3"x11.7")
100 per box, Color: White. This coil binding ring can not be used with 3:1 pitch binding machine !!!
4:1 Coil binding ring means per inch has 4 holes (This is very important distinguish 3:1 pitch from 4:1 pitch cause the things to be as different. 3:1 means per inch has 3 holes. They are used with different binding machine.)
4:1 pitch spiral binding coils great for reports and presentations with any 4:1 pitch coil binding machine - special using with Rayson PD-1501 or PD-1503 coil binder.
Description
Rayson metal spiral binding spines consider all the uses, with 100 coils ensures long-term productivity for all of your binding projects. Coil bindings lie flat for easy reading, with 360 degree rotation capability for added convenience. Spines are designed with a 4:1 pitch, which equates to 4 holes per inch. They are perfect for business proposals, annual reports, company presentations, and any other book binding project.