DoorStepInk remanufactured HP C6170 blue spot color ink cartridges are the highest quality replacement cartridges on the market. Using only original HP C6170 blue spot color cartridges, we remanufacture each cartridge to the highest quality standards to match OEM ink level, color, and performance guaranteed! For over 20 years Planet Green Recycle been remanufacturing cartridges in the U.S at our State-of-the-art-facility located in Chatsworth, California. Using the latest technology, and customized equipment, each cartridge is cleaned, filled, and tested for quality assurance. By only remanufacturing genuine OEM cores, we can extend the lifecycle of an empty cartridge and deter less waste from entering our landfills. All our cartridges are high-quality, eco-friendly products that meet OEM standard and performance at a substantial savings. We are so confident in our products that we back each one of our cartridges with a 100% satisfaction guarantee. Planet Green Recycle is a award-winning recycler of inkjet and toner cartridges!