The dewalt dch254 m2 sds plus rotary hammer is ideal for drilling anchors and fixing holes into concrete brick and masonry from 4mm to 24mm it has a rotation stop mode for light chiselling in plaster tiles and render and an impact stop mode for rotary only drilling in wood and metal this heavy duty machine has a quick release sds plus toolholder and keyless chuck for easy switching between hammer rotary hammer and rotary only applications it is best in class for vibration producing just 66ms to