The Bosch GBH8 is the "go to" construction rotary hammer. Capable of drilling from 12mm to 65mm in masonry / concrete with solid SDS max bits and from 45mm to 150mm with tungsten wet/dry core bits. Powerful 12.5 jules impact rate with variable speed. Can also be used as a medium duty breaker with chisels / points. This is the all round construction rotary unit.