The Hilti SF 8M-A22 is the boxing equivalent of Manny Pacquiao; they are both small but pack a hell of a punch. They also don’t need to be plugged into the mains. The Hilti SF 8M-A22 is a Cordless drill driver with an innovative self-tightening metal chuck and comes with 85 Nm of torque, virtually eliminating the risk of drill bits slipping especially in high torque applications.