The CardKleen Presaturated Magnetic Head Cleaning Cards are specifically designed by Read Right to effectively clean and maintain printer and scanner heads. With dimensions of 3 3/8"x2 1/8" and a total of 17 pieces included in the package, these cards provide a convenient and efficient solution for keeping your printing and scanning equipment in top condition. The magnetic property of the cards ensures easy removal of debris and buildup, making them a reliable choice for maintaining the functionality of your devices.