A power tool , comprising: a housing ; a motor disposed in the housing ; an output member configured to hold a fastener-driving bit , the output member having a longitudinal axis (A) about which it is rotationally drivable by the motor ; and a holder assembly , the holder assembly comprising a leg portion configured to extend from the housing and a holder configured to hold a fastener; wherein the holder is rotatable with respect to the leg portion about an axis which is substantially perpendicular to the longitudinal axis (A) of the output member , between a working position at or adjacent to the longitudinal axis (A) of the output member in which the holder is configured to hold a said fastener in a position to be driven by a said bit held by the output member , and a non-working position further from the longitudinal axis (A) of the output member , wherein the working position of the holder is a position in which most or all of the holder is positioned between the leg portion and the longitudinal axis (A) of the output member ; characterized in that : the non-working position of the holder is a position in which the leg portion is positioned between most or all of the holder and the longitudinal axis (A) of the output member ; and the power tool further comprises a magnet on the holder and/or the leg portion by means of which the holder may be retained in its working position and a magnet on the holder and/or the leg portion by means of which the holder may be retained in its non-working position. a housing ; a motor disposed in the housing ; an output member configured to hold a fastener-driving bit , the output member having a longitudinal axis (A) about which it is rotationally drivable by the motor ; and a holder assembly , the holder assembly comprising a leg portion configured to extend from the housing and a holder configured to hold a fastener; wherein the holder is rotatable with respect to the leg portion about an axis which is substantially perpendicular to the longitudinal axis (A) of the output member , between a working position at or adjacent to the longitudinal axis (A) of the output member in which the holder is configured to hold a said fastener in a position to be driven by a said bit held by the output member , and a non-working position further from the longitudinal axis (A) of the output member , wherein the working position of the holder is a position in which most or all of the holder is positioned between the leg portion and the longitudinal axis (A) of the output member ; characterized in that : the non-working position of the holder is a position in which the leg portion is positioned between most or all of the holder and the longitudinal axis (A) of the output member ; and the power tool further comprises a magnet on the holder and/or the leg portion by means of which the holder may be retained in its working position and a magnet on the holder and/or the leg portion by means of which the holder may be retained in its non-working position. the non-working position of the holder is a position in which the leg portion is positioned between most or all of the holder and the longitudinal axis (A) of the output member ; and the power tool further comprises a magnet on the holder and/or the leg portion by means of which the holder may be retained in its working position and a magnet on the holder and/or the leg portion by means of which the holder may be retained in its non-working position. <EOS>