GBC WireBind Binding Spines, 7/16", Black, 100 Pack

Permanently bind documents with these professional spines when presentation and quality are primary concerns. Ideal for busy corporate offices, universities and accounting firms. Sturdy spines are the perfect choice for important projects. With a 7/16"" diameter, they securely hold 90 pages."" This binding allows 360 degree rotation. Spines also allow pages to lie flat for reading, note taking and photocopying. Great for creating study guides. WireBind spines bind pages through 32 holes, with a 3:1 pitch, which creates three loops per inch