An insulating ratchet driver with pivoting head has: a handle, a spring, a pressing knob, a driving head and a pivoting member. The pivoting member is provided with a cover made of an insulating material. All metal portions of the handle, the pressing knob and the driving head are coated with an insulating layer.

An angle type power wrench includes a housing, a motor, an output shaft and an angle drive connecting the motor to the output shaft. The angle drive includes a drive pinion provided with a forward gear head, and a bevel gear provided on the output shaft and engaged by the drive pinion gear head. The drive pinion is surrounded by a bearing support sleeve supporting a forward drive pinion bearing and a rear drive pinion bearing axially spaced from the forward drive pinion bearing. The forward drive pinion bearing includes an inner ball race at a forward end of the drive pinion at or very close to the gear head, and an outer ball race at a forward end of the bearing support sleeve wherein the bearing support sleeve is connected to the housing via an adjustment connection adapted to enabling adjustment of an axial position of the drive pinion.

A multi-purpose hand tool system is described. The tool system includes a handle and one or more inserts that are releasably engaged with the handle. The tool system is useful for a variety of applications including use with basin and faucet hardware.

The invention is a hand tool for enhancing strength of a working head, which comprises: a main body with two parallel ears spaced apart at a front end; a working head with a pivotal portion pivotally connected between the ears of the main body; a column with one end connected to a periphery of the pivotal portion; and a strengthening portion extending from the periphery of the pivotal portion toward the column, and disposing at a junction of the pivotal portion and the column. An outer diameter of the strengthening portion is greater than an outer diameter of the column, the strengthening portion is capable of enhancing a strength of the column, relatively improving a torsion applied by the column to a workpiece, and enhancing durability and strength of the column.

An ear structure of an operating rod comprising: a main rod having a shaft and two ears, the two ears are parallelly intervally disposed at a front end of the shaft; a front end of each of the two ears is an assembling end, a rear end thereof is a connecting end connected to the front end of the shaft, a width of the connecting end is greater than a width of the assembling end, and a width of each of the two ears gradually increases from the assembling end toward a direction of the connecting end; the width of the connecting ends of the two ears is increased to increase a force-bearing strength between the ears and the shaft, so that the ears of the operating rod are capable of enhancing the strength and service life.

A quick release device of a hand tool includes: a main body; an operating portion, including a slidable sleeve movably disposed around the main body and a pin radially inserted into the slidable sleeve, the operating portion further including a movable rod movably disposed in the main body, the pin connected with the movable rod; an annular plastic body, rotatably disposed around the slidable sleeve and corresponding to the pin, a stepped structure formed between the slidable sleeve and the annular plastic body; an identification portion, disposed around the annular plastic body; wherein the slidable sleeve is movable between first and second positions, when the slidable sleeve moves toward the first position, the pin drives the movable rod to move toward a fixing position; when the slidable sleeve moves toward the second position, the pin pushes the movable rod to move toward a releasing position.

A wrench includes a tool head, an outer tube unit, a rod unit and a sleeve unit. The outer tube unit includes an outer tube, a tail seat and a biasing member. The tail seat is detachably mounted to the outer tube. The rod unit includes an inner rod telescopically disposed in the outer tube and formed with a plurality of cavities. The biasing member biases the inner rod away from the tail seat. The sleeve unit is slidably sleeved on the outer tube and includes a positioning ball engageable with a selected one of the cavities to prevent the inner rod from moving relative to the outer tube and removable from the selected one of the cavities to allow the inner rod to move relative to the outer tube.

The invention is a hand tool with an operating head, which comprises: a main body having two parallel ears spaced apart at a front end; and a working head having a body; a column connected to one side of the body; another side of the body is provided with a pivotal block and two flaps to pivotally connect the two ears of the main body between the pivotal block and the two flaps respectively. The two flaps are capable of assisting in supporting outer sides of the two ears to relatively strengthen a structure of the ear, thereby enhancing a torsion exerted by the column on a workpiece, and enhancing durability and strength of the column.

A screw driver system includes a screw driving bit and a guide clamp. The screw driving bit includes a unitary body having a first end and a second end with a longitudinal axis defined therebetween and an outer surface having a cylindrical portion between the first and second ends. The screw driving bit includes a first circumferential groove and a second circumferential groove that are affixed in coaxially positioned arrangement about the longitudinal axis on the outer surface of the cylindrical portion each having a bottom surface. The bottom surface of the first circumferential groove defines a first outer diameter that is larger than a second outer diameter defined by the second circumferential groove. The guide clamp includes a jaw for holding the screw driving bit. When engaged with the first circumferential groove, the guide clamp prevents rotation of the screw driving bit. When engaged with the second circumferential groove, the guide clamp does not prevent rotation of the screw driving bit.

A button lock that selectively retains the angle of an object relative to a handle. The button lock is rotatable between an engaged position, where the angle is retained, and a disengaged position, where the object is disengaged from the handle and can pivotally move about the handle to change the angle. In the engaged position, button teeth on the button engage with handle teeth on the handle. In the disengaged position, the button teeth disengage the handle teeth to space the button from the handle and therefore allow free movement of the handle about the button. The button therefore quickly and easily retains the angle between the object and the handle.