A torque transmitting assembly (1, 101) for a power tool, which assembly comprises; - an angle head (2, 102) having a first output shaft (6, 106) which is rotational about a rotational axis and arranged to be connected to a power tool motor for transmitting a rotational movement from the motor to the first output shaft (6, 106); - a power tool attachment part (3, 103) having an input shaft (7, 107) which is connectable to the first output shaft (6, 106), a second output shaft and a gear arrangement (11a-c, 111a-c)) for transmitting rotational movement from the input shaft to the second output shaft; and - fixation means for fixation of the attachment part to the angle head, which fixation means comprises; · first fixation means (20, 22, 23, 30, 50, 51, 120, 122, 123, 150, 151) arranged to prevent axial displacement of the attachment part (3, 103) relative to the angle head (2, 102); and · second fixation means (40, 61, 62, 63, 64, 140, 161, 162a-b, 163, 164) arranged to prevent rotation about the rotational axis of the attachment part (3, 103) relative to the angle head (2, 102), which second fixation means is separate from the first fixation means, wherein the second fixation means comprises a torque transmitting ring (40, 140), wherein the second fixation means comprises at least two sets of mutually cooperating form-locking members (61, 62, 63, 64, 161, 162a-b, 163, 164), characterised in that said torque transmitting ring is fixed from rotation relative to the angle head by means of a first set of form-locking members and relative to said attachment part by means of a second set of form-locking members, wherein each set of form-locking members comprises a male member (61, 63, 161, 163) and a at least one female member (62, 64, 162a-b, 164), which female member is arranged to form-lockingly receive the male member, and wherein the torque transmitting ring (40, 140) comprises a female member (62, 64) of the first and the second sets of form-locking members. - an angle head (2, 102) having a first output shaft (6, 106) which is rotational about a rotational axis and arranged to be connected to a power tool motor for transmitting a rotational movement from the motor to the first output shaft (6, 106); - a power tool attachment part (3, 103) having an input shaft (7, 107) which is connectable to the first output shaft (6, 106), a second output shaft and a gear arrangement (11a-c, 111a-c)) for transmitting rotational movement from the input shaft to the second output shaft; and - fixation means for fixation of the attachment part to the angle head, which fixation means comprises; · first fixation means (20, 22, 23, 30, 50, 51, 120, 122, 123, 150, 151) arranged to prevent axial displacement of the attachment part (3, 103) relative to the angle head (2, 102); and · second fixation means (40, 61, 62, 63, 64, 140, 161, 162a-b, 163, 164) arranged to prevent rotation about the rotational axis of the attachment part (3, 103) relative to the angle head (2, 102), which second fixation means is separate from the first fixation means, wherein the second fixation means comprises a torque transmitting ring (40, 140), wherein the second fixation means comprises at least two sets of mutually cooperating form-locking members (61, 62, 63, 64, 161, 162a-b, 163, 164), characterised in that said torque transmitting ring is fixed from rotation relative to the angle head by means of a first set of form-locking members and relative to said attachment part by means of a second set of form-locking members, wherein each set of form-locking members comprises a male member (61, 63, 161, 163) and a at least one female member (62, 64, 162a-b, 164), which female member is arranged to form-lockingly receive the male member, and wherein the torque transmitting ring (40, 140) comprises a female member (62, 64) of the first and the second sets of form-locking members. · first fixation means (20, 22, 23, 30, 50, 51, 120, 122, 123, 150, 151) arranged to prevent axial displacement of the attachment part (3, 103) relative to the angle head (2, 102); and · second fixation means (40, 61, 62, 63, 64, 140, 161, 162a-b, 163, 164) arranged to prevent rotation about the rotational axis of the attachment part (3, 103) relative to the angle head (2, 102), which second fixation means is separate from the first fixation means, wherein the second fixation means comprises a torque transmitting ring (40, 140), wherein the second fixation means comprises at least two sets of mutually cooperating form-locking members (61, 62, 63, 64, 161, 162a-b, 163, 164), characterised in that said torque transmitting ring is fixed from rotation relative to the angle head by means of a first set of form-locking members and relative to said attachment part by means of a second set of form-locking members, wherein each set of form-locking members comprises a male member (61, 63, 161, 163) and a at least one female member (62, 64, 162a-b, 164), which female member is arranged to form-lockingly receive the male member, and wherein the torque transmitting ring (40, 140) comprises a female member (62, 64) of the first and the second sets of form-locking members.