MacBook / MacBook Pro Bottom Rear Cosmetic Screw. This screw is used on the MacBook (13-inch, Aluminum, Late 2008), MacBook Pro (13-inch Mid 2009), MacBook Pro (13-inch, Mid 2010), MacBook Pro (15-inch, Late 2008), MacBook Pro (15-inch, Mid 2009), MacBook Pro (17-inch, Early 2009), and MacBook Pro (17-inch, Mid 2009). Apple describes this part as: Screw, Phil 00, 13 mm, Cosmetic. Sold individually.922-8666,9228666