Hammers come in all different flavors.  The Powerstrike has some features that are not normally found in hammers.  It has a spring in the head that actually absorbs all the impact. The same technology that is used in golf clubs.  The handle of the hammer is hollow aluminum which keeps it light and balanced.  The hammer has interchangeable parts so you can change the face or the weight of the hammer.  The stainless steel claw has 3 ways that you can pull nails, traditionally or from the 2 sides.

You really feel the advantage of this hammer when you use it.  There is hardly any vibration transmitted to your hand.  The head of the tool absorbs all the impact.  In our tests I can honestly say I felt less fatigued using the Powerstrike vs other hammers we tested.  Check out Powerstrike Hammers.