The 'CORRECT' screwdrivers needed for the MacBook Pro 15" Retina Display Late 2013
P5 Pentalobe Screwdriver _ Size 1.2 mm
This fits the 5-point pentalobe screws found on the bottom of ALL MacBook Pro Laptops with a Retina Display.
'''P6 Pentalobe Screwdriver _ Size 1.5 mm'''
For battery and fan screws.
You need 2 six-sided T5 Torx screws to attach the I/O board.
'''PH000 Phillips Screwdriver'''
For the smallest X shape screws.
.
F.Y.I. _ So you don’t buy the wrong one.
.
P2 Pentalobe Screwdriver _ Size 0.8 mm
This fits the 5-point pentalobe screws found on the bottom of iphone 4s 5, 5s, 5c , se, 6, 6 plus, 6s , 6s plus, iPhone 7, and iphone 7 plus.
Being clueless about computers I had zero idea which screwdriver was the one I needed to open and clean my MacBook Pro laptop.
I’m glad I read the Darth Vader - 05/23/2014 comment above and learned they were speciality 5 sided screws, as they are so small I didn’t notice.
After doing some research I found this info.