Package Contents: 1 x 51B1000 Toner Cartridge (Black) Compatible Printer Models: MS317dn Printer MS417dn Printer MS517dn Printer MS617dn Printer MX317dn Printer MX417de Printer MX517de Printer MX617de Printer Stable print quality: Toner cartridge is optimally designed. Using high-quality toner, high compatibility and high reliability. Professional quality management system strive to ensure excellent. (Actual yield varies with usage, graphics printed and environmental conditions) Wide Application: Widely use in home, office, school, bank, small business, large business and organisation and other fields. The products will be packaged with multi-layer shockproof to ensure the product is sealed, and the toner leakage and the color mixing phenomenon can not occur. If you have any questions, please do not hesitate to contact us, our customer service team will solve the problem for you at the fastest speed. We are committed to giving you the best service experience.