HP Printer Paper, Office20 Paper, 8.5 x 11, 3 Hole Punch, Letter Size, 20lb, 92 Bright, 10 Ream Case / 5,000 Sheets (113102C) Acid Free Paper Enjoy HP quality and reliability for all your everyday documents Featuring ColorLok Technology - Colors are 30% brighter for richer images; Blacks are up to 60% bolder for extra sharpness, Inks dry 3 times faster for less smearing Can be used in copiers, printers and fax machines Acid-free