Great DIYer tool to do those harder jobs the professionals to. With the SDS Plus hammer action you can do jobs like remove stubborn tiles without breaking sweat. The hammer action without rotation can remove tiles or dig out a chase for running cables and pipes or installing sockets. The SDS hammer action with rotation gives you the extra oomph you need for drilling concrete for inserting plugs. The variable speed means you won’t be taken by surprise and get a nasty kick when you start the drill