Abstract: A tool capable of turning on/off a light automatically comprises a body including a fitting area in response to a fitted tool and a receiving groove disposed therein to communicate with a font end thereof; a light module installed in the receiving groove and including at least one bulb and a cell set, a first electrode of the cell set connecting with a first connecting leg of the bulb, and a second electrode of the cell set connecting contacting with the fitting area of the body, and when the fitting area of the body is fitted to a fitted tool, a second connecting leg of the bulb conducting to the second electrode of the cell set.

Abstract: A tool capable of turning on/off a light automatically comprises a body including a fitting area in response to a fitted tool and a receiving groove disposed therein to communicate with a font end thereof; a light module installed in the receiving groove and including at least one bulb and a cell set, a first electrode of the cell set connecting with a first connecting leg of the bulb, and a second electrode of the cell set connecting contacting with the fitting area of the body, and when the fitting area of the body is fitted to a fitted tool, a second connecting leg of the bulb conducting to the second electrode of the cell set.

Abstract: A method for manufacturing a workpiece with labels includes a forging step for forging an initial billet, a lathe machining step for forming the initial billet into a first treated billet, a rolling step for forming a second treated billet by rolling at least one labeling indentation on the first treated billet, a heat treatment step for reinforcing a structure strength of the second treated billet, a dyeing step for obtaining a third treated billet by dyeing a surface of each labeling indentation on the second treated billet with a dyestuff, a polishing step for forming a fourth treated billet by polishing the third treated billet, and an electroplating step for electroplating on the fourth treated billet.

Abstract: A hexagonal spanner having an L shape comprises a short driving portion having a groove at one distal end thereof; and a first tightening unit enclosing around the groove of the short driving portion; an outer diameter of the first tightening unit being greater than a maximum diameter of the short driving portion; and a long driving portion having a groove at one distal end thereof; and a second tightening unit enclosing around the groove; an outer diameter of the second tightening unit being greater than a maximum diameter of the long driving portion.