All of Toner Refill Store's premium compatible Canon toner cartridges contain brand new parts and are 100% guaranteed to meet or exceed your expections and surpass the print quality of the OEM (Original Equipment Manufacturer) Canon Fax L3300I. Our Canon Fax L3300I toner cartridges are made from the highest quality materials. Our Canon Fax L3300I high yield laser toner cartridge have a 'One Year 100% Satisfaction Guarantee'. The use of our premium compatible laser toner cartridges for the Canon Fax L3300I does not void your printer's warranty.