A brand-new originally packed BEST4U – 255A Toner Cartridge works effectively and smoothly even at large amount of pages providing high quality components. Compatible with - LaserJet P3010, P3015, P3015d, P3015dn, P3015n, P3015x, M525c M525dn M525f M521dn M521dw. BEST4U 255A Black Toner Cartridge is warranted to be free from defects in materials and workmanship under a period of 3 months from the date of purchase. This warranty excludes any damage caused by the user. If the return is due to the mistakes of buyers, for example, wrong purchase, no longer in use, change of mind, etc, the product should be return back with originally pack, unused and undamaged within 10 days. In case of incompatible with the Printer the Toner should be return with fully unused ink. Once the seal of the product is open and the product has been used by the user the company is not liable for any refund. Please make sure to check out the compatibility of your printer.