For use on softer stone such as marble or limestone.  It is used for shaping, texturing or smoothing.

If the mason wishes to shape or remove stone, he swings it with more force and impact on the stone. A lighter impact force will only smooth the stone, leaving a stippled finish.

This hand hammer (above), the hand hammer (far right) and the small hammer for use with a pneumatic hammer, were used by Emmett Kling, Sr., Butler, Mo. 

Stippled finish on Carthage “Marble” limestone on Bates County Courthouse was produced by a bush hammer.

 Source: Interview with Melissa Kling Phillips, Butler, Mo.