Mead CombBind Binding Spines - 0.50" Maximum Capacity - 85 x Sheet Capacity - For Letter 8 1/2" x 11" Sheet - Plastic - 125 / Box | Bundle of 5 Boxes

Permanent design allows pages to stay flat for easy manageability Sturdy material resists damage for long-lasting use 1/2 spine accommodates up to 85 letter-size sheets" For use with any comb-style binding machine (sold separately)