Nexus Root Toolkit v1.6.3
http://www.wugfresh.com/nrt/
Instructions:
1. Select the correct device and build (what you are currently running)
2. Configure your drivers if you haven’t already using the driver guide (If you aren’t sure use Step 3 of the driver guide to test your drivers).
3. If you need to backup your important data.
4. Unlock your device
5. Root your device
6. Enjoy! ^_^
Disclaimer: We should not be held responsible or liable in any manner for any damage caused.