Transfer kits are a collection replacement components that comprise the internal hardware responsible for transferring the toner pigments from the toner hopper to the photoconductive drum. The transfer roller, also referred to as the toner roller or developer is a cylindrical unit which is full of small magnetic beads that will pull the pigmented polymer pigments (toner powder particles) out of the hopper and onto the surface of the roller. The developer will then brush against the paper rolling against the drum. The photoconductive drum, having a much greater electrical charge then the developer, will pull the toner off the developer and onto the paper. Most transfer kits will include a transfer roller (developer), an electrostatic transfer belt, and air filters. Inkgrabber.com offers the Original Equipment Manufacturer (OEM) or Genuine Transfer Kits which are created by the printer manufacturer. All products, including the HP OEMRM1-1885, are ISO 9001 certified, meeting the highest standards and offered at only $169.99. Every Genuine HP Transfer Kit has up to a 2-3 Year shelf-life and is backed with the Inkgrabber 90 Day Money Back Guarantee. In addition Inkgrabber.com also provides a 1 year exchange policy for damaged or faulty hardware.