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Clever Supplies brand products are made in the USA! Why pay more for cheaper product with a high defective rate? You will end up having to send it back to the manufacturer. Your time is valuable. Get a quality product that you KNOW will work. Purchase the Clever Supplies Compatible for Canon GPR-40 (GPR40BK), 2 Black Set and experience the difference! All Clever Supplies brand products are backed by '100% Quality Satisfaction' 1 year warranty against defects in materials and workmanship for all toner products. Free tech support for any problems for all Clever Supplies brand products. The use of Clever Supplies brand replacement laser toner cartridges and supplies does not void printer warranty. Premium Quality Replacement Toner Cartridge is made by ISO9001 Certified Factory to Meet or Exceed OEM Standards. These units are manufactured 100% brand new with all new parts including OPC drums, wiper blades, a smart chip and other internal parts, they are an economical alternative to expensive OEM GPR40BK, Compatible Toner Cartridges. The Compatible Toner Cartridges will produce the same amount of page yield as an OEM cartridge would. This is a Compatible for Canon GPR-40 toner cartridges Black guaranteed to perform with Canon Laser Printers. It replaces the original Canon GPR-40 toner cartridge black. The compatible replacement for GPR40BK . Our Compatible for GPR40BK Cartridge is a replacement for OEM Canon . We offer a 100% Quality Satisfaction Guarantee on our Compatible for GPR40BK Laser Toner Cartridges and supplies. For use in the following printers: ImageRunner LBP3560, ImageRunner LBP