Amazon.com: Altru Print M501-RK-AP Roller Maintenance Kit for HP Laserjet Pro M501 & Managed/Enterprise M506, M527 with F2A68-67910 Transfer Roller, F2A68-67914 MP Tray and 1 Pair of F2A68-67913 Tray 2 Rollers :
Amazon.com: RM2-5679-MK-AP (FM1-V151) Maintenance Kit Compatible with HP Laserjet Pro M501, M506, M527 (110V) with Fuser, F2A68-67910 Transfer Roller, F2A68-67914 MP Tray and 1 Pair of F2A68-67913 Tray 2 Rollers : Office