After-sales service: We have always followed the highest standards of production and have undergone rigorous testing to ensure quality. If you have any questions, you can contact us and reply online 24 hours. Safe packaging: The RM2-5679-MK-AP Maintenance Kit is packed in multi-layer vacuum plastic bags, the foam is re-packed and filled and fixed, and the outside is packed in a carton, which is more compressive and anti-falling, ensuring the integrity of the fuser. Voltage: 110/ 120 Volt. High quality: RM2-5679-MK-AP Maintenance Kit is made of high-quality high-temperature-resistant raw materials, with firm fixing, perfect fit for continuous printing of 200,000 sheets of paper for a long time, PPC high-temperature-resistant raw materials can effectively protect the printer, strict production process, the product has passed ISO 9001 and 14001 certification and testing to ensure excellence.The performance is strictly repeated and tested to ensure long-lasting use. Compatible model:Compatible with HP LaserJet Pro M501, Managed M506 / M527, Enterprise M506 / M527 Substitute the part number :HP Part #'s; RM2-5679, FM1-V151, F2A68-67910, F2A68-67914, F2A68-67913.