e*thirteen has included almost everything you need for upgrade to a 12-speed drivetrain. This includes 2.5 mm, 3 mm, 4 mm, and 5 mm Allen keys as well as a square drive and T25 bit chuck. 2000 mm of cable housing, grease, chain and the small parts necessary to completely convert are also in the box. The only extra tools you need are for removing/installing the cassette. These can be seen in the pictures below.