If you buy this battery new from OWC (macsales), they include--for free--the two screwdrivers you will need. Got this battery today for 99.00, installed it myself based on this instructional in 10 minutes. And I have never opened a macbook before, first time. The main things: don't lose the screws, most of them are incredibly tiny (I lost one when dusting with microfiber), don't forget to put the screws back on battery housing, and be gentle and patient when removing small, semi-rigid battery wire cable. Best wishes.