This industry standard machine offers economical flexibility, power and utility -- and does so for a very long time.  The small, tight angle head can sneak a whole bunch of torque into some very small places.  The head  can easily be adjusted right, left, up or down giving the user a lot of  options when facing a tight-place job.  The balance of the machine as well  as the thoughtful positioning of the controls make it seem as though your  hands are fully trained in its use the first time you pick it up.  The  gearing and fine working right angle drive make it almost impossible to  stop this durable motor.  (But you can do it in a pinch - an ode to the  motor design)  Last year I had to change the brushes for the second time in  26 years of use.  Most people get better wear than this, but in my  renovation endeavors I have used this machine for everything between  removing a tractor tire to a make-do winch.  Other attributes:  The  auxillary handle is built as well as the machine itself, and is very  useable.  The box is standard Millwuakee tough should last through the life  of the tool.  If you install plumbing vents in frame houses every day, you  would do better with the venerable 1676 Hole-Hawg by the same manufacturer.  Otherwise strong consideration must be given to this machine as your  standard 1/2" drill.  Can't go wrong.