No problem but you should really use the search function, this topic has been covered loads of times. But to answer your question, Brembo is the make of Brakes (Calipers) Just the gold bits you see, the disk's and pads are standard Nissan items.
Although the Brembo's are good, Upgrading the brakes is still meant to be one of the best mods you can do to the car. If your just planning on replacing the pads, then go for Redstuff or Ferodo, they can usually work out cheaper and they perform better than the OEM items too.