Rolodex Open Classic Rotary Files - 500 Card Capacity - For 2.25" x 4" Size Card - 24 A to Z Index Guide - Black Open-style, rotary card file keeps contacts at your fingertips and holds cards securely in place. Cards are easily removed for posting, typing and rearranging. Sturdy frame features a strong tubular metal construction. Card file includes cards made of index cardstock and insertable A-Z index tabs.