This M5 Drill/Tap combo is awesome because it allows you to both drill and tap at the same time!  We use it all of the time on our builds.  Whether we need to tap the end holes of V-Slot or tap a plate, these are the tools to use.  They make the job super simple. 

Note - You will want to be sure that your drill is on low and you keep the tap straight as you go in slowly (do not force) and then reverse out.  It takes a few times of going in and out to get to your desired depth.  You can also use cutting oil to make the process even smoother.  

Includes 1 M5 x .80 Drill Tap