Avery Business card page is compatible for use with 3 or 7 ring 5 1/2″ x 8 1/2″ binder and each page can hold 8 business cards. Page is made of polypropylene material that offers better durability and can hold 2″ x 3 1/2″ business cards. Insert size: 5 1/2″ x 8 1/2″ Material: Polypropylene Business cards size: 2″H x 3-1/2″W Sheet protector type: Ring binder Number of holes punched: 7 Fit standard three-ring binders Organizes and protects business cards Keep key contacts organized at a glance Fits 5 1/2″ x 8 1/2″ binders 4 business card slots per page; 8 card max capacity per page for 40 card capacity total Thick durable clear plastic holds 2″ x 3 1/2″ business cards Polypropylene product is archival safe and acid free, won’t lift off print Specifications table Attribute name Attribute value color & material Color Family The PRIMARY material that the item is made of. Polypropylene/PP True Color Acid content determines how long the paper or product will last before breaking down. The acid level is measured by the pH (potential of hydrogen) on a scale from 0 to 14. Acid Free (alkaline) paper has a higher pH (above 7), has a longer life expectancy, and is less likely to discolor and break down over time. Acid Free Anti-Glare 7 Protector Sheet Capacity Heavyweight Transparency Level Water Resistant style Loading Style Sheet Protector additional details Next Day Delivery 5 Series or Collection 5