Some larger scale printers, copiers, and cooperate machines contain an apparatus for closing fastners in media (stapling your projects for you). These machines typically have other paper-handling capabilities as well, such as binding, folding, trimming, saddle stapling, and hole drilling. In order to accomplish these finishing tasks, the machine has to contain several complex moving mechanisms including belts, pads, and rollers for driving the media; a potentiometer for calculating and tallying the amount of staples used inside the Staple Cartridge (based off rotational movement); a fastener mechanism for hammering the staple through a stack of media; a spring or magnetic mechanism to push or pull the staples forward; and a document collation tray to collect the pages about to be stapled or finished. The Staple Cartridge is composed of a sequence of tiny unbent metal rods in a flat adjacent configuration rolled around the potentiometer which is centered into the cartridge. The strip of metal staple rods is slowly unrolled being pushed or pulled to an opening in the staple cartridge by the magnetic mechanism or by spring. Once at the opening a magnetic force will trigger the rod at the opening to bend (by pulling on one side), forming a U-Shape. A low voltage electrical pulse will quickly push the staple through the page. Sometimes a secondary electrical pulse will be triggered to generate more driving force when one pulse is not enough to penetrate the thicker media. And with the staple in place, the media will pass through the fastener, compressing the staple into the media. Inkgrabber.com offers the Original Equipment Manufacturer (OEM) or Genuine Staple Cartridges which are created by the printer manufacturer. All products, including the HP OEMC8092A, are ISO 9001 certified, meeting the highest standards and offered at only $37.99. Every Genuine HP staple cartridge replacement 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.