Compatible Printer Models: M506 Printer M506n Printer M506dn Printer M506x Printer Pro M501 Printer M501n Printer M501dn Printer MFP M527 Printer M527c Printer True Colors Await: Adhesive toner powder, resistant to color fading of all kinds. Refined Toner Powder: Accurate & sharp print output to make your printing looks more professional. Get reliable printing performance, at a fair price: Our cartridges are tested to ensure consistent, quality prints that match the image/text seen on one's printer both at the component level and with print tests. What Warranty Will You Get from Us? Easy-to-Contact-Us for Warranty If Item defective, guaranteed money back; reach us via:> 1. “Order List” -> Click “Contact Seller”. 2. Click the store name link under “Add to Cart”-> Click ‘Ask a question’.