Abstract: A hand tool assembly has a body and a resilient magnetic assembly. The body has a connection bar. The resilient magnetic assembly has a resilient element and a magnet. The resilient element is elastic and has a proximal end and a distal end. The proximal end of the resilient element is securely connected with the connection bar. The magnet is mounted securely on the distal end of the resilient element. Therefore, fastening elements can be removed easily and do not interfere with operation of the hand tool assembly.

Abstract: A pneumatic pipe wrench includes an elongated shaft provided with axially opposed top and bottom ends respectively and a cylindrical shaft guide removably connected to the shaft. The apparatus further includes a mechanism for attaching the shaft guide to the shaft, a mechanism for removably securing the bottom end of the shaft to an inner surface of the existing length of pipe, and a mechanism for loosening the existing length of pipe. Such a loosening mechanism is removably connected to the shaft. The loosening mechanism includes the handle of the pumping mechanism and the depressions of the shaft.

Abstract: A support is for supporting electrical and/or electronic structure and/or electrical power supply structure for a hand dynamometer tool, in particular for a torque wrench operating by breaking mechanical equilibrium. A body of a substantially cylindrical shape that extends along a longitudinal axis, defined by two end faces, recesses and/or seats suitable for receiving electrical power supply members and/or electrical/electronic circuit boards are arranged and distributed around the axis, on or close to a periphery of the support. The support can be applied to a support module for a hand dynamometer tool and to a dynamometer tool.

Abstract: An internal pipe wrench adapted to engage the inner walls of a pipe for applying torque thereto. The wrench comprises a rotatable mandrel which is generally triangular in cross-section and three cooperating gripping jaws movable into gripping engagement with the pipe upon rotation of the mandrel. The gripping jaws are retained in operable proximity with the mandrel by means of a yieldably resilient rubber or plastic material and are uniformly configured so that upon rotation of the mandrel in either direction, the leading edge of the gripping jaws will move into positive gripping engagement with the inner walls of the pipe.