An adjustable open ended wrench having adjustable gripping jaws that grip inch or metric sized nuts or bolts and provides bidirectional release action of the gripping jaws that allows the user to loosen or tighten the nut or bolt without having to remove the wrench. The wrench is particularly suited for accessing nuts or bolts or nuts that are located in areas where rotational action is very restricted and may be provided with an adjustable torque release spring biased ball detent mechanism that can be set to release the grip of the gripping jaws if the gripping force exceeds a predetermined amount to prevent damage to the nut or bolt due to over tightening.

An open-end wrench includes a stationary jaw including an inclined hole, a through hole adjacent to a first end of an interior surface and communicating with the inclined hole, and a forward hook; a handle pivotably secured to a rear end of the stationary jaw; and a moveable jaw including a forward hook; a hollow cylinder extending from a rear portion to dispose in the inclined hole, the hollow cylinder having an elongated slot on a surface and communicating with an interior of the hollow cylinder, and internal threads at an open end of the hollow cylinder; a biasing member disposed in the hollow cylinder, a threaded fastener secured to the internal threads to urge against a first end of the biasing member; and a pin inserted through the through hole and the elongated slot to stop at a second end of the biasing member.

An open-end wrench includes a stationary jaw including an inclined hole, a through hole adjacent to a first end of an interior surface and communicating with the inclined hole, and a forward hook; a handle pivotably secured to a rear end of the stationary jaw; and a moveable jaw including a forward hook; a hollow cylinder extending from a rear portion to dispose in the inclined hole, the hollow cylinder having an elongated slot on a surface and communicating with an interior of the hollow cylinder, and internal threads at an open end of the hollow cylinder; a biasing member disposed in the hollow cylinder, a threaded fastener secured to the internal threads to urge against a first end of the biasing member; and a pin inserted through the through hole and the elongated slot to stop at a second end of the biasing member.

A fastening tool able to fasten different types of fastener includes a main body and a sliding assembly. The main body defines a receiving space. The sliding assembly is slidably arranged in the receiving space. The receiving space forms an internal corner used as a clamping groove. An end of the sliding assembly defines a latching groove and the clamping groove faces the latching groove. When the sliding assembly is driven to slide in the receiving space, a clamping size to match the head of a fastener is achieved, the clamping being with a great force and with precision of contact on the plan view profile of the fastener.

An angle adjustable wrench includes a handle, a main part, an adjustment unit and a jaw unit. The handle includes a head which has inner teeth defined in the inner periphery thereof. The head is installed in the main part. The adjustment unit includes a sleeve with an axial hole, two pawls, a resilient member and a button. The button includes a first neck and a second neck. The resilient member pushes the button, and the two pawls are pushed by the first neck and engaged with the inner teeth of the head. The jaw unit includes a movable jaw, a rotary wheel and a fixed jaw. The rotary wheel is threadedly mounted to the shaft. The main part together with the jaw unit are pivoted an angle relative to the handle by pushing the button.

A wrench includes a body having a room defined therein. Two heads are respectively formed on two ends of the body, and each head has an operation hole defined therethrough. Each of the operation holes communicates with the room. A positioning rod is movably received in the room and has an outer threaded portion and a rotary member is rotatably and threadedly mounted to the outer threaded portion of the positioning rod. The rotary member is rotated to move the positioning rod into either one of the operation holes to position an object in the operation hole.

An adjustable universal pipe fastening tool is configured such that mechanical elements, particularly fastening members such as bolts and nuts and pipes, can be easily fastened and unfastened using a single tool, thereby ensuring a convenient use. Particularly, an adjustable universal pipe fastening tool having a spanner portion is provided, which is configured to rotate, and a wrench portion, which is configured to be able to slide. The adjustable universal pipe fastening tool according to the present invention comprises: a body portion, which has a sliding hole formed on a surface thereof; a spanner portion formed on one side of the body portion so as to manage fastening and unfastening of mechanical elements; and a wrench portion formed on the other side of the body portion so as to manage fastening and unfastening of mechanical elements while sliding inside the sliding hole of the body portion.

An adjustable universal pipe fastening tool is configured such that mechanical elements, particularly fastening members such as bolts and nuts and pipes, can be easily fastened and unfastened using a single tool, thereby ensuring a convenient use. Particularly, an adjustable universal pipe fastening tool having a spanner portion is provided, which is configured to rotate, and a wrench portion, which is configured to be able to slide. The adjustable universal pipe fastening tool according to the present invention comprises: a body portion, which has a sliding hole formed on a surface thereof; a spanner portion formed on one side of the body portion so as to manage fastening and unfastening of mechanical elements; and a wrench portion formed on the other side of the body portion so as to manage fastening and unfastening of mechanical elements while sliding inside the sliding hole of the body portion.

A wrench, connectable to a standard square shaped extension, has a wrench head with opposed jaw faces which together define a plane that lies perpendicular to the respective jaw faces. A standard square shaped extension socket is affixed to the wrench head, where a standard square shaped extension can be inserted into the standard extension socket, along a direction that is non-orthogonal to the transverse plane. The standard extension socket can be attached to a frame of the wrench head, or to a rotatable guide which controls movement the opposed jaw face which is movable.

A multi-functional wrench having an adjustable construction that allows the nut or bolt engaging surfaces of the wrench to be located at different angles or positions relative to a handle in order to allow the wrench to be used in otherwise difficult to reach areas. The wrench optionally includes a secondary handle removably connected to a preferably arcuate, multi-functional wrench body that is, in turn, removably connectable to a desired wrench head which includes a work-engaging fitting. The multi-functional wrench has a body that is archial or curved in shape and includes at least one drive post or ratchet and a plurality of sockets that are useful for many applications. The wrench is particularly useful to manipulate the body of straight stop and angle stop compression valves connectable to plumbing under sinks, behind toilets and inside cabinets, as well as nuts and bolts.