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 :
COXREELS Roller Guide: For HP Series/MP Series/PC Series/SG Series/SH Series/SHW Series Reel Series - 10C541|1728-1 - Grainger