GBC 4000104 3/4 in. Diameter 160 Sheet Capacity CombBind Standard Spines - Black (100/Box)

Communicate your ideas with professional polish. 19-ring plastic spines won't scratch, chip, peel or discolor. Perfect for internal reports and functional documents. Bind 11 in. x 8-1/2 in. 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 in.

Reusable design lets you add and remove letter-size pages for quick edits Rigid plastic won't scratch, chip, peel or discolor for lasting use Use in GBC and other plastic comb binding machines (sold separately)