GBC Combbind Black 1/2 Inch-Diameter Plastic Binding Combs 100 Count (40-000-68)
Basic in looks and functionality, the CombBind spine is perfect for internal reports and functional documents. Compatible with Ibico and most other plastic comb binding systems. 19-hole plastic spines won't scratch, chip, peel or discolor. Available in a variety of sizes and colors.