Plastic Binding, 1/4"Diameter, 25-Sht Cap, 100/BX, Black PK, Gbc, Mfr#: GBC4000020

CombBind 19-ring binding spines bind up to 25 sheets of letter-size documents. Design allows you to add and remove pages with any comb-bind machine for quick edits. Rigid PVC plastic won’t scratch, chip, peel or discolor. Standard, 1/4" diameter spines are compatible with GBC and other plastic comb-binding machines.