A flex-head tool includes a first portion pivotally coupled to a second portion. A pivot mechanism is engaged with the first and the second portions. The pivot mechanism is movable between a first position in which the first portion is fixedly positioned with respect to the second portion, and a second position in which the first portion is pivotal with relative to the second portion. The pivot mechanism includes a toothed first engaging portion engageable with teeth of pivot holes of the first and the second portions simultaneously and not simultaneously selectively and a second engaging portion connected with a pivot hole and in surface-to-surface contact.

A tool adapter assembly, such as, for example, a socket or socket adapter, having drive, center, and work bodies. The drive body and the work body can be adjusted in a number of positions/angles relative to one another by a user. The tool adapter assembly includes components adapted to retain a set/desired position/angle of the drive body and the work body relative to one another.

A tool adapter includes a body, which is elongated along a first axis. The body includes at least a first side surface that is opposite to the second side surface, as well as a first end surface that is opposite to the second end surface. The body includes a first input drive connector, which is located at a middle section of the body and which is accessible from the first side surface. The first input drive connector is structured to mate with a first drive part of a torque wrench such that a longitudinal axis of the torque wrench is parallel to the first axis when the torque wrench is connected to the adapter. The body includes a first output drive connector that is located at a middle region of the first end surface. The first output drive connector is structured to mate with a first connector part of a tool head such that a longitudinal axis of the tool head is parallel to the first axis when the tool head is connected to the adapter. The first input drive connector is defined to be a first size. The first output drive connector is defined to be a second size, which is different from the second size.

Expandable spinal implants, systems and methods are disclosed. An expandable spinal implant may include a first endplate, a second endplate, and a moving mechanism that is operably coupled to the first and second endplates. The moving mechanism may include a wedge, a first sliding frame and a second sliding frame disposed on opposite sides of the wedge, a screw guide housing a rotatable first set screw and a rotatable second set screw opposite the first set screw. The first set screw may be operably coupled to the second sliding frame and the second set screw may be operably coupled to the wedge. The moving mechanism may operably adjust a spacing between the first and second endplates upon simultaneous rotation of the first and second set screws and operably adjust an angle of inclination between the first and second endplates upon translating the first set screw or second set screw.

A socket wrench is provided, including: a sleeving portion, including a sleeving hole disposed therethrough along a first direction; a connecting arm, extending from the sleeving portion in a direction lateral to the first direction; an operation rod; and a pin member, pinning the connecting arm and the operation rod in a direction non-perpendicular to the first direction so that the operation rod is rotatable about the pin member relative to the sleeving portion.

A wrench is provided, including: a connection seat, including two seat bodies and a connection portion, the two seat bodies respectively including two first pivot portions; and a driving member, movably connected with the connection seat, the driving member including two second pivot portions, and the two second pivot portions being rotatably connected with the two first pivot portions.

Disclosed is a drill attachment device comprising a transfer gear configured to rotate about an axis perpendicular to the axis of a drill used to power the transfer gear. The transfer gear may comprise an open-ended slot which provides a passageway through which a threaded rod may pass. The open-ended slot may further be configured to retain a mechanical nut, enabling a user to run a threaded rod through the open-ended slot for driving the nut along the rod. The transfer gear may also support an external driver, and the drill attachment device may comprise guide slots configured to position the rod and/or nut against the external driver for driving a nut up or down rod.

A wrench includes a main body, a mounting member, a push rod, two push blocks, a first elastic member, a handle, and a drive mechanism. The main body has a support arm, two pivoting portions, a rotation passage, a first receiving hole, a first receiving slot, two second receiving slots, a second receiving hole, and a shank. The push rod has a positioning element. Each of the push blocks has a first received portion, a second received portion, a third mounting portion, a first locking section, a second locking section, a first locking groove, and a second locking groove. The drive mechanism has a driving head, a control rod, and a second elastic member. The driving head has two fitting portions, a third receiving hole, multiple first positioning portions, and an operation end. The control rod has a second positioning portion and a stepped portion.

An adjustable socket assembly includes a collet having a first end, a second end, and a perimeter wall. The second end has a receiving aperture therein. The collet is divided into a plurality of sections. A sleeve has a bottom end that receives the collet. The sleeve has an interior surface that tapers inwardly and abuts the sections to move toward each other as the sleeve moves toward the second ends of the sections. A biasing member extends through a top end of the sleeve and engages each of the sections. The biasing member is actuated to bias the sleeve downward to close together the sections and engaged the valve actuator. An engagement head is attached to the upper end of the biasing member and engages a tool to rotate the collet.

A wrench assembly, and methods of making and using such a wrench assembly, whereby the wrench assembly includes a head, an opening disposed within the head, a first pivotal member coupled to the head, a plurality of radial slots inwardly extending into the first pivotal member, and a handle, whereby the head pivotally couples to the handle.