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".;