Required parts:
VW rear brake pad set - 1pcs (contains 4 pads, for both rear wheels)
Brake rotor - 2pcs
Brake caliper/pads mounting kit (also called caliper rebuild kit) - 1pc (contains 2 sets, for both rear wheels)
Rotor retaining bolt (Torx 50) - 2pcs
Caliper retaining bolt (M16 3xSquare) - 4pcs (VW says should be replaced every time)
Brake wear sensors - 4pcs
Required tools:
M16 triple square (12x square) socket attachment (for caliper retaining bolts)
Torx 50 attachment (for brake disc retaining bolt)
M5 triple square (for parking brake adjustment bolt)
Other DIY guides:
Replacing Front Rotors And Pads by Tahoe12
How to change your brake pads, brake pad hardware, and rotors on your Touareg