A power tool comprising: a housing (20,20a,20b); a cable outlet (21a,80,100,106) through the housing wherein the cable outlet has a longitudinal central axis; an electric motor for driving a work tool to perform a machining operation on a work-piece wherein the motor is located in the housing; a flexible electric supply cable for supplying electric current to the motor; a tubular sheath for protecting supply cable projected through the cable outlet wherein the sheath is rotatable in relation to the cable outlet to change direction of unprotected supply cable in relation to the cable outlet; and a locking means (98,104a,104b,108) for locking the sheath in a plurality of rotational orientations in relation to the cable outlet, wherein the locking means comprises: a receiving member (104a,104b) connected to one of the sheath or the cable outlet; an engaging member connected to the other of the sheath or the cable outlet; and a biasing means for biasing the engaging member into engagement with the receiving member to lock the sheath in one of the plurality of rotational orientations, wherein movement of the sheath against the biasing means causes disengagement of the engaging member from the receiving member and unlocks the sheath for rotation in relation to the cable outlet; characterised in that the sheath directs the unprotected supply cable at an inclined angle away from the cable outlet central axis wherein the sheaf is rotatable about the central axis in relation to the cable outlet to change the direction of unprotected supply cable in relation to the cable outlet a housing (20,20a,20b); a cable outlet (21a,80,100,106) through the housing wherein the cable outlet has a longitudinal central axis; an electric motor for driving a work tool to perform a machining operation on a work-piece wherein the motor is located in the housing; a flexible electric supply cable for supplying electric current to the motor; a tubular sheath for protecting supply cable projected through the cable outlet wherein the sheath is rotatable in relation to the cable outlet to change direction of unprotected supply cable in relation to the cable outlet; and a locking means (98,104a,104b,108) for locking the sheath in a plurality of rotational orientations in relation to the cable outlet, wherein the locking means comprises: a receiving member (104a,104b) connected to one of the sheath or the cable outlet; an engaging member connected to the other of the sheath or the cable outlet; and a biasing means for biasing the engaging member into engagement with the receiving member to lock the sheath in one of the plurality of rotational orientations, wherein movement of the sheath against the biasing means causes disengagement of the engaging member from the receiving member and unlocks the sheath for rotation in relation to the cable outlet; characterised in that the sheath directs the unprotected supply cable at an inclined angle away from the cable outlet central axis wherein the sheaf is rotatable about the central axis in relation to the cable outlet to change the direction of unprotected supply cable in relation to the cable outlet a receiving member (104a,104b) connected to one of the sheath or the cable outlet; an engaging member connected to the other of the sheath or the cable outlet; and a biasing means for biasing the engaging member into engagement with the receiving member to lock the sheath in one of the plurality of rotational orientations, wherein movement of the sheath against the biasing means causes disengagement of the engaging member from the receiving member and unlocks the sheath for rotation in relation to the cable outlet; characterised in that the sheath directs the unprotected supply cable at an inclined angle away from the cable outlet central axis wherein the sheaf is rotatable about the central axis in relation to the cable outlet to change the direction of unprotected supply cable in relation to the cable outlet