Compatibility - Altru Print Fuser Kit is compatible with Part # RM2-6431 Supports - Color Laser Printer Pro M452nw, M477fnw Features - Altru Print high quality components and printer maintenance experts ensure optimum printer performance Warranty - Extended 6-month replacement warranty and product support from our experienced USA based staff; No core return or exchange required; Recycling encouraged Altru Print Fuser Kit Includes - 1 x RM2-6431 Fuser, Prepaid Free Core Return Shipping Label