Professional building tools, mason’s bolster oct shank made of high carbon steel that has been heat treated and with two-color rubber handle for soft and better grip. Have big plate which can protect your hand from injury when you misplace hammer blows. So it is ergonomic, bi-material hand guard helps protect from overstrike, reduces slipping and absorbs vibration. Used for rough cutting and trimming of wood, wallboard and masonry. It is hardened, quenched and tempered for long life.