Paving Breaker

A powered hand tool used for clay digging, breaking frozen ground, demolition of concrete paving, and the like. The unit has a non-rotating chuck through which a piston, or any other percussion system, imparts hammer-like blows to various types of accessories such as chisels, spades, picks, backfill tamping pads, and frost wedges. When provided with certain attachments, the unit may also be used as a sheeting and piling driver, drift bolt driver, or spike driver. See also drill, pneumatic, drifter; and drill, pneumatic, sinker.