Fellowes Plastic Binding Combs, Round Back, 5/8", 120 Sheet Capacity, Navy, 100 Pack (52390) Versatile plastic comb binding gives a professional appearance to bound reports and presentations. Available in a variety of colors to match your covers for a custom look. Also available in a variety of sizes to bind 12-500 page documents. Use with Fellowes or any standard 19-ring comb-binding system.