Abstract: A hammer having a plastic molded handle. The rear end of the handle has a longitudinally extending bore hole that is filled with a gelatinous material that dissipates shock vibrations. An end cap is secured to the rear end of the handle by sonic welding. The front end of the handle has both a vertical and a horizontal longitudinally extending slot and these slots intersect each other at a substantially 90 degree angle. A plastic wedge unit formed from intersecting wedge sections is driven into the slots in the top end of the handle to secure the hammer head and the wedge unit is sonic welded to the handle.