Dewalt dch sds plus heavy duty rotary hammers 36v dewalt dch364m2 gb this 36v heavy duty rotary hammer from dewalt is ideal for drilling anchors and fixing holes into concrete brick and masonry from 4 to 26mm equipped with a quick release sds plus toolholder and keyless chuck for easy switching between hammerrotary hammer and rotary only applications the rotation stop mode is for light chiselling in plaster tiles and render while the impact stop mode is for rotary only when drilling i