Used to change a hard drive on a Mac Book Pro. The small Phillips screwdriver adapts well to tiny screw heads of the Mac. The screwdriver is slightly magnetic (perhaps slightly too): If you have a coil (extra low voltage transformer) in your electronic components do not hesitate to re-magnetize. Plastic tools can safely remove the connectors. Too bad the good size Torx is only in the form of angled key. The quality of the set is fairly average but has everything on hand for a low price. For someone who has no tool and wants to embark on the adventure that is the first budget. I ordered at the same time as my replacement drive Samsung (extra) Samsung SpinPoint M8 HN-M101MBB - Hard drive - 1 TB - internal - 2.5 "- SATA-300 - 5400 revolutions / min - buffer: 8 MB for Mac I expected a maximum of surprises (For the record the same operations on a Sony Vaio are much simpler, the screw heads are much larger). Important Mac: given the small size of the screws when reassembling absolutely predict a tube of Loctite "Brake Filet" normal Thread Lock 5ml