Patent ID: 8276685

Claim:
An electrical power tool comprising: a chuck provided at a tip of a tool body, and rotatable with a tip tool held; and an operation switch exposed to a side surface of the tool body so as to be able to operate, and rotatably provided around an axis parallel to a rotation axis of the chuck, wherein the chuck is stopped when the operation switch is in a predetermined neutral position, wherein the chuck is rotated in a direction according to a rotation direction of the operation switch, wherein a rotation speed of the chuck is continuously changed according to a rotation angle of the operation switch, wherein the operation switch has operation protrusions respectively protruded from both side surfaces of the tool body, and bilaterally symmetrically formed with a rotation axis of the operation switch therebetween, and wherein the operation switch is urged by a spring force due to an urging spring composed of a coiled spring so as to be self-restored to a neutral position at which rotation of the chuck is stopped.