A drill comprising: a housing (2, 4); a motor mounted in the housing (2, 4) having a drive spindle; an output spindle capable of being rotationally driven by the drive spindle via a torque clutch which slips when the torque across the torque clutch exceeds a predetermined value, the output spindle having an impact surface and a central axis; a tangential impact mechanism for superimposing tangential impacts onto the output spindle when activated, the tangential impact mechanism comprising; a sleeve rotatably mounted on the output spindle which is capable of being rotationally driven by the drive spindle; and an anvil rotatably mounted onto the output spindle and which is connected to the sleeve so that relative rotation of the sleeve and spindle results in the anvil repetitively striking the at least one impact surface; wherein the output spindle and the sleeve are rotationally driven by a planetary gear system comprising a ring gear, a sun gear and at least one planetary gear mounted on a carrier and which is drivingly connected between the ring gear and sun gear; wherein the ring gear is mounted on the output spindle so that rotation of the ring gear results in rotation of the spindle; wherein the sun gear is mounted on the sleeve so that rotation of the sun gear results in rotation of the sleeve; wherein the drive spindle is drivingly connected to the carrier such that rotation of the drive spindle results in the rotation of the at least one planetary gear around the central axis of the output spindle; wherein the tangential impact mechanism is activated when the torque clutch slips; the drill further comprising a torque threshold adjustment mechanism (302, 310,322,321,352) by which the predetermined value of the torque at which the torque clutch starts to slip can be adjusted. a housing (2, 4); a motor mounted in the housing (2, 4) having a drive spindle; an output spindle capable of being rotationally driven by the drive spindle via a torque clutch which slips when the torque across the torque clutch exceeds a predetermined value, the output spindle having an impact surface and a central axis; a tangential impact mechanism for superimposing tangential impacts onto the output spindle when activated, the tangential impact mechanism comprising; a sleeve rotatably mounted on the output spindle which is capable of being rotationally driven by the drive spindle; and an anvil rotatably mounted onto the output spindle and which is connected to the sleeve so that relative rotation of the sleeve and spindle results in the anvil repetitively striking the at least one impact surface; wherein the output spindle and the sleeve are rotationally driven by a planetary gear system comprising a ring gear, a sun gear and at least one planetary gear mounted on a carrier and which is drivingly connected between the ring gear and sun gear; wherein the ring gear is mounted on the output spindle so that rotation of the ring gear results in rotation of the spindle; wherein the sun gear is mounted on the sleeve so that rotation of the sun gear results in rotation of the sleeve; wherein the drive spindle is drivingly connected to the carrier such that rotation of the drive spindle results in the rotation of the at least one planetary gear around the central axis of the output spindle; wherein the tangential impact mechanism is activated when the torque clutch slips; the drill further comprising a torque threshold adjustment mechanism (302, 310,322,321,352) by which the predetermined value of the torque at which the torque clutch starts to slip can be adjusted.