Abstract: A drilling machine includes a base located on a horizontal surface, a post provided on the base, a worktable movably connected to the post and a drilling unit provided on the post. The drilling unit includes a direct-current brushless motor, a drill and a transmission. The direct-current brushless motor is provided on the post. The drill is operatively connected to the direct-current brushless motor. The transmission includes a circuit board and gear-related buttons operable to instruct the circuit board to convert an alternating current into various direct currents to cause the motor and, therefore, the drill to rotate at various rotational rates.

Abstract: A plier or shear tool includes a pair of handles having one end rotatably secured together with a tube and each having a pole. One or more tool members each includes a pair of levers having a middle orifice for receiving the tube and each having an aperture for receiving the poles and for quickly securing the tool members to the handles. A ball is received in the tube, a shaft is received in the tube and has a depression for receiving the ball. A spring may bias the shaft to disengage the depression from the ball and to force the ball to engage with the hub.

Abstract: An oil applying device includes a housing having a base for receiving oil and includes an upper oil tank. A lower roller is rotatably supported in the base and a middle roller is rotatably supported above the lower roller such that the lower roller may apply the oil onto the middle roller. An upper roller is rotatably supported above the middle roller for engaging with a work piece between the upper roller and the middle roller. A number of nozzles are secured to the bottom of the oil tank for applying the oil onto the upper roller so as to apply the oil onto the work piece.