GBC WireBind Binding Spines, 1/4 Inch Spine Diameter, Black, 55 Sheet Capacity, 1 Spines (97758)
Fellowes 52325 Plastic Comb Binding Spines, 3/8 Inch Diameter, Black, 55 Sheets, 100 Pack
Fellowes Plastic Comb Binding Spines, 5/16 inch Diameter, Black, 40 Sheets, 100 Pack (52507)
Fellowes Plastic Comb Binding Spines, 1/2 Inch Diameter, Black, 90 Sheets, 25 Pack (52323)
Fellowes Wire Binding Combs, 3/8-Inch, 80 Sheets