For use with the following HP Laserjet printers: HP5Si, HP8000.Manufacturer Direct from the Printer Parts & Supplies Leader: Partsmart Corporation. 300+ tons of toner distributed worldwide, 15+ years in printer parts and supplies industry, headquarter in Duluth Georgia, our quality and service are dependable.Our products are manufactured in an ISO-9001 quality certified factory. All parts are extensively tested by quality control experts to ensure high quality. These parts are the #1 choice for printer maintenance and repair needs.3-Month Warranty. At Printel, we believe in our products. That's why we back them all with a 3-month warranty after the date of purchase and provide friendly, easy-to-reach support.About Partsmart Corporation Established in 2000, Partsmart specializes in design, development, manufacture, distribution of parts and supplies for printers as well as other office equipments. Printel is created to carry on our belief and dream of delivering the best product experience to our customers. At Partsmart, we integrate innovative design, cutting-edge technology, premium quality and superior customer service into our brand Printel. With over one million dollar inventory in stock, we provide same day shipping and fast delivery to meet our customers' urgent needs. While with headquarter in Duluth, Georgia of United States, we have established global foot print in Germany, Australia, Canada, and China. We have been proudly serving millions of happy customer. We Believe in Voice of Customer Our goal is to satisfy each and every customer. We believe in customer feedback is one of the most critical way for us to learn and grow. So please don't hesitate to contact us with any questions you may have regarding the products and service. We are eager to hear from you!