GBC CombBind Standard Spines, 1" Diameter, 225 Sheet Capacity, Black, 100/Box

Communicate your ideas with professional polish.;19-ring plastic spines won't scratch, chip, peel or discolor.;Binds 11 x 8 1/2 documents.;Perfect for internal reports and functional documents.;Editing capability with a machine.;Compatible with GBC and other plastic comb binding machines.;To select correct diameter, measure thickness of material (including covers) and add 1/8".;You may also like Opaque Plastic Presentation Covers for Binding Systems, Black, 11.25 x 8.75, Unpunched, 25/Pack | Bundle of 2 Packs.