A wrench assembly comprising an upper clamp assembly, a lower clamp assembly coupled to the upper clamp assembly, and an alignment device disposed between the upper and lower clamp assemblies to allow the upper clamp assembly to move laterally relative to the lower clamp assembly when rotated relative to the lower clamp assembly.

An oil filter remover includes a main body, a toothed element, three claw elements, and an elastic element. The main body has three first pivot portions and a first connecting portion between two adjacent first pivot portions. The toothed element is arranged at the center of the main body and is formed with an annular toothed portion. Each claw element has a bent clamping portion and a second pivot portion. The second pivot portions are pivotally connected to the first pivot portions respectively. Each claw element has a toothed portion to be engaged with the annular toothed portion respectively. One of the claw elements has a second connecting portion between the clamping portion and the second pivot portion. The elastic element is connected to the first connecting portion and the second connecting portion therebetween so that the claw elements tend to pivot toward the main body.

A spanner wrench assembly including a base plate having a gripping portion extending from a handle portion and defining an arcuate cavity with a open end. At least one support plate is secured to the gripping portion and substantially matches a configuration of the arcuate cavity. The support plate is of a lesser density material than the base plate. An engagement plate substantially matches the configuration of the arcuate cavity and is secured with respect to the at least one support plate. A cover defines one elongate aperture extending to an open mouth portion formed by an adjacent end of the cover, and another elongate aperture extending to a closed mouth portion dimensioned to accept a connector head which is wider than the elongate apertures.

A tool for tightening and loosening a pipe fitting, comprising a cup-shaped tool head having an opening for receiving a pipe and a shaft attached to and extending from the tool head. The tool head has an interior surface adapted for a pipe fitting such that the pipe fitting may rotate with respect to the tool head. The shaft is shaped to receive a pneumatic hammer. The pneumatic hammer has a hammer head, and the hammer head in operation extends into the interior of the tool head to act on a wing of the pipe fitting.

A tool, such as, a socket, that is adapted to remove a stripped or otherwise difficult to remove fastener. The socket includes a body having first and second ends, a first axial bore in the first end adapted to receive the stripped or cylindrical fastener head, and one or more cutting channels in the body between the first and second ends forming internal cutting edges adapted to engage the stripped or cylindrical fastener head. The one or more cutting apertures may have an elongated diamond-like shape and extend a portion of the way around the body and toward the second end.

Assemblies, suppressor assemblies, firearms, tool sets, methods, and/or the like are provided. In some embodiments, a tool set for assembling and/or disassembling a suppressor assembly may include a first wrench and a second wrench. In some embodiments, the first wrench includes one or more teeth configured to engage a plurality of annularly arranged protrusions disposed at or proximate a distal end of a suppressor assembly, the plurality of annularly arranged protrusions defining recesses therebetween. In some embodiments, the second wrench includes one or more wrench engagement surfaces configured to engage one or more corresponding suppressor engagement surfaces disposed at or proximate a proximal end of the suppressor assembly.

A jaw wrench includes two first bodies, a second body a function end unit and a control unit. The first bodies each have a first toothed hole. The second body has a second toothed hole. The function unit includes a third body and a fourth body pivotably connected to the third body. The third body has a first toothed portion and is connected to the second body. The fourth body has a second toothed portion. An object is clamped between the first and second toothed portions. The control unit has two control members, two second resilient members and two covers. The two control members extend into the two first and second bodies and each have a third toothed hole which is engaged with the first/second toothed hole. When the control members are pushed, the third toothed holes are disengaged from the first toothed hole.

A tool for tightening and loosening a pipe fitting, comprising a cup-shaped tool head having an opening for receiving a pipe and a shaft attached to and extending from the tool head. The tool head has an interior surface adapted for a pipe fitting such that the pipe fitting may rotate with respect to the tool head. The shaft is shaped to receive a pneumatic hammer. The pneumatic hammer has a hammer head, and the hammer head in operation extends into the interior of the tool head to act on a wing of the pipe fitting.

A pipe connecting device having a joint body including a fitting cylinder to which a flared synthetic resin-made tube is to be externally fitted, an external thread formed on a radially outward side of the fitting cylinder; and a union nut including an internal thread screwed with the external thread, and a tube pressing portion that presses a diameter changing portion formed between a flared portion in the tube, and a non-flared portion, in the direction of the axis. In a fastening completion state in which the tube pressing portion is caused to press the diameter changing portion by a screw advancement of the union nut, the screw advancement being produced by screwing the internal thread to the external thread, positions of a basal end of the external thread and a tip end of the union nut in the directions of axes coincident with each other.

A tool for removing a stud includes a housing, a cage and a canted coil spring. The housing has an interior sidewall with a three-lobed cam and a groove. Each lobe has a counterclockwise cam inner surface and a clockwise cam inner surface on the opposite side of the lobe center line. The cage has a top surface, a tapered terminus and a groove disposed between the top surface and the tapered terminus. The cage includes jaws, in which the jaw outer cam surface of each jaw interfaces with the cam inner surface of the interior sidewall. The canted coil spring rotatably couples the cage to the housing. During stud removal, the housing rotates counterclockwise relative to the cage and the cage rotates counterclockwise to engage the stud.