The dewalt dch481 flex volt xr brushless sds max hammer produces a performance that rivals corded machines the brushless motor provides extreme runtime and reduced maintenance rotation stop mode for chiselling and impact stop mode for rotary only drilling with dry diamond cores ideal for drilling anchors and fixing holes into concrete brick and masonry up to 40mm in diameter for increased safety the anti rotation system detects a loss of tool control and reacts by instantly cutting the power it