The PSI Laser Mail 3640 laser toner from LD Products is a professionally remanufactured laser toner cartridge that is guaranteed to meet or exceed the print quality of the OEM toner cartridge. Our PSI Laser Mail 3640 remanufactured laser toner has new internal parts including OPC drums and wiper blades. Purchasing our PSI Laser Mail 3640 laser toner is an excellent way to save money without sacrificing quality. Also find high-quality remanufactured drum units specifically designed for your machine. Our PSI Laser Mail 3640 laser toner cartridge has a 'Two Year 100% Quality Satisfaction Guarantee'. The use of our remanufactured laser toner for the PSI Laser Mail 3640 does not void your printer's guarantee.