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.

A fire hydrant wrench includes a wrench-head able to fasten to the pentagonal interface of a fire-hydrant and a handle able to be selectively extended or retracted by a user. The wrench includes a cylindrical rod which may be contained by and telescopes within a tubular handle. A cap on a handle-end of the tubular handle prevents the cylindrical rod from leaving the handle in one direction, while a collar affixed externally to the cylindrical rod prevents it from leaving the handle in the opposite direction. The tool-head containing the wrench is affixed to a tool-end of the cylindrical rod which protrudes from the tubular handle in all positions.

A two-jaw adjustable wrench wherein both jaws are movable simultaneously toward or apart from each other.

A ratchet wrench set including a ratchet wrench, an extension and sockets. The extension is employed both as a driver extension and a handle extension. The extension is used by a workman to assist in accessing a hard to reach fastener simply by manually coupling the extension to the ratchet wrench driver member at one end and to a socket to the other end of the extension. Alternatively, a workman can couple the extension to the ratchet wrench handle to extend its longitudinal length and thereby improve torque leverage. The extension may have a shaft that is adapted to improve a workman's handgrip so that whenever the extension is longitudinally coupled onto the handle portion of the ratchet wrench it may be more readily gripped.

A length extension assembly for a hand tool comprises at least two elongated extension tubings each having a longitudinal passageway and being of a size and shape that one of the tubings may be selectively inserted into the passageway of the other tubing. The assembly also includes at least two elongated extension bars each of a size and shape that each extension bar may be inserted into an appropriate tubing. The tubings are provided with longitudinally spaced locking holes. Each bar is provided with a locking member which can enter and be engaged in one of the locking holes to connect the bar to its tubing. Optionally, one tubing could be inserted into the larger tubing and a locking member on the smaller tubing could be engaged in a locking hole of the larger tubing to connect the tubings together. Various length selections can be achieved by connecting a bar to at least one tubing or by connecting a bar to one tubing and connecting that tubing to a larger tubing. Additional length adjustment is achieved by the engagement of a locking member in an appropriate locking hole.

The present invention relates to a three-piece wrench comprising: a wrench body with a working head and a shaft, the working head is located at a front end of the shaft, the shaft has a length; a first extension rod with a length; and a second extension rod with a length; the lengths of the first extension rod and the second extension rod are greater than the length of the shaft; combination of the wrench body, the first extension rod and the second extension rod provides various usage lengths of the wrench, so that different connection types can be used to form required lengths according to requirements.

An adapter for a bearing race and seal driver tool that allows the tool to be used in hard to reach applications. The adapter connects to a driver and a handle at a non-zero angle, for example a right angle, to allow the adapter to be struck at a face of the adapter rather than the handle to be struck at an end of the handle. A pocket is included at one or more connection points between the adapter and the handle or driver to resist rotational movement of the handle or driver.

Various wrenches, wrench systems, and methods of the present invention include inner and outer mouths that provide increased strength and utility. The inner mouth may be configured with an open or a closed end to receive removable open or closed end gears and perform ratcheting action when the gear seated in the inner mouth and engaged and a rotational force is applied to the gear via the wrench. The outer mouth may prevent the gear from disengaging from the inner mouth when the inner mouth is installed in the outer mouth and provide structural strength to the inner mouth when force is applied to the gear via the wrench. Various embodiments include a handle and a head, where the head includes a fixed jaw and a movable jaw, or belt, forming a mouth configured to receive removable open or closed end gears and perform ratcheting action when a fitting is engaged by the gear positioned in the mouth and rotational force is applied to the fitting via the gear and the wrench. The present invention may include two or more stackable sockets to vary the effective length of the socket.

The present invention provides an extendable wrench comprising: a wrench having a head portion and a shaft connected to a rear end of the head portion; an insertion hole recessed at a rear end of the shaft; a cover to dismountably close the insertion hole; an extension rod with a front end formed with a plug to be plug-connected with or separated from the insertion hole of the wrench; and an elastic positioning member provided between the plug of the extension rod and the insertion hole of the wrench, when the plug of the extension rod is plug-connected with the insertion hole, the elastic positioning member keeps the plug in position. Thereby, the wrench can be operated independently; when application of larger operating torque is required, the extension rod can be combined with a rear end of the wrench to form a longer operating arm of force to meet the requirements of large torque.

A telescopic tool includes a positioning device mounted between first and second rods. The first rod includes a longitudinal hole extending along a longitudinal axis, a first positioning hole intercommunicating with the longitudinal hole, and a first gripping portion. The second rod is movably received in the longitudinal hole, includes a plurality of second positioning holes, and is movable relative to the first rod along the longitudinal axis to align the first positioning hole with one of the plurality of second positioning holes. A switch controller is movable relative to the first rod and is movably coupled to a positioning member. The positioning member movably extends through the first hole and is releasably engaged in one of the plurality of second positioning holes in response to movement of the switch controller relative to the first rod. A fixing member includes a second gripping portion mounted around the first rod.