Not all hammers are created equal. The Cole-Bar Hammer is a multi-function hammer with a full crow bar. The hammer can be opened and extended from 0 to 180 degrees and locked in place at 15 degree increments. You can also use this as a socket wrench (with its 1/2″ drive). This is essentially a hammer, a crow bar, a demolition tool, an angle measurement tool, a ruler, a socket wrench and nail pliers.