An installation tool for fastening a top plate to a roof support member and other structural connections is adapted to drive threaded fasteners at a pre-established angle. The tool preferably includes a rotary driver assembly and a telescopic tube assembly. A guide head assembly is mounted adjacent the outer end of the telescopic tube assembly. Locating or reference structures function to properly precisely set the drive angle of the fastener. Various indicators mounted to the guide head indicate the flush position of a locating surface or reference structure. The flush indicators may employ a projection, a flag, an LED or an audio module.

A power tool with a removable lighting accessor that is configured to be inserted into a compression sleeve, wherein the lighting attachment may be inserted and rotated without removing a working end of the power tool.

A power driven in-line disposable torque-limiting device having a gearless clutch assembly with a first clutch element affixed to the cylindrical body, a second clutch element engaged with a shaft for rotation together with the shaft, one or more bearing elements disposed between the first clutch element and the second clutch element, and a compressive element configured to apply force across the clutch elements. The first clutch element and second clutch element exert compressive force, shearing force, or both on the one or more bearing elements to provide clutch functionality at predetermined torque limits.

An electric tool includes a tool body and a clamping device configured to clamp an operating attachment. The clamping device includes a moving member, a biasing member, a limiting member, and a switching mechanism. The moving member is sleeved on the output assembly and has a locking position where the operating attachment is locked. The biasing member is configured to apply a biasing force to the moving member to keep the moving member in the locking position. The switching mechanism includes a toggle portion and a driven portion. The toggle portion is configured to be movable toward the tool body and drive the moving member to move in a direction away from the tool body to disengage from the locking position. The biasing member is configured to apply a biasing force to the driven portion to keep the moving member in the locking position.

A tool adapter includes a body and a retaining device. The body has a coupling hole and a side hole interconnected with the coupling hole. The retaining device includes an outer sleeve and a retaining member. The outer sleeve is movable relative to the body and is provided with an interacting portion. The retaining member has an engaging portion arranged in the side hole, a first portion arranged on an outer periphery of the body, and a bend portion located between the engaging portion and the first portion. The interacting portion releasably abuts against the bend portion in response the movement between the outer sleeve and the body.

A wedge anchor driver for driving an anchor having a bolt into a surface such that a portion of the bolt is exposed, the wedge anchor driver having a flute extending between a top end and a shaft, the flute housing a plurality of cavities having a first cavity configured to fit onto a first nut, the first cavity having a first socket size; a second cavity configured to fit onto a second nut, the second cavity having a second socket size smaller than the first socket size; and a third cavity configured to receive the portion of the bolt; wherein the anchor driver shaft is lockable into a hammer drill, such that a user can drive the anchor into a corresponding hole with the hammer drill in a hammer mode, and then tighten the first nut or the second nut by switching the hammer to a drill mode.

A self-drilling expandable anchor operable with a self-drilling expandable anchor installation tool.

An attachment for a portable power tool, in particular a screwdriver machine or drilling machine, wherein the attachment has a drive part with a drive element and an output part with an output element for driving a work tool, wherein the drive element is able to be coupled to a machine output element of the portable power tool in order to drive the attachment and is connected or coupled to the output element via a transmission for driving the output element, and wherein the drive part has, on a drive side, a fastening device for releasably fastening the attachment to the portable power tool for conjoint rotation with respect to an angle positioning axis. Provision is made for the output part to be rotatable about the angle positioning axis relative to the drive part into at least two mutually different angle positions.

A newly configured centerpoint drill and a drill attachment device that can be attached to a conventional cordless drill include configurations that require a user's hand to be in direct alignment with the keyless chuck of the drill to enable a user or operator to apply maximum pressure or force during use of a drill to reduce time and effort spent by a user/operator.

A torque transfer assembly for a bit holder includes an axial movement limiting subassembly and a rotation limiting subassembly. The axial movement limiting subassembly is configured to retain a drive body of the bit holder in proximity to a driven body of the bit holder. The rotation limiting subassembly is configured to cause torque applied to the drive body to be transferred to the driven body. The rotation limiting subassembly includes a first cam body at a distal end of the drive body and a second cam body at a distal end of the driven body. The first and second cam bodies are configured to transfer a majority of the torque between the drive body and the driven body indirectly via the torque transfer assembly by limiting rotation of the first cam body relative to the second cam body.