Dewalt d25721k 7kg sds max combi hammer is ideal for drilling anchor fixings and through holes in concrete and masonry from 12 to 48mm in diameter and core drilling up to 115mm features active vibration control system that incorporates a floating handle and delivers extremely low vibration has an ergonomic compact and slim line design that maximises control and offers easy access to confined spaces other features include electronic variable speed lock on switch for chipping and an impact energy