A striking tool includes an elongated handle having a first end and a second end. The head is attached to or formed integrally with the first end of the handle and defines a striking portion, a claw portion, and a body portion therebetween. The striking tool may have slots, notches, and/or cavities configured to engage fasteners or other objects for applying torsion thereto. A striking member may be removably attached to the striking portion of the head, which may define a nail puller. Attachments, such as an axe head, may be removably attachable to the head of the striking tool.

Tools, for example, hexagon sockets, dodecagonal sockets, splined sockets, wrenches, etc., that have inner surface geometries adapted to engage a flank of a fastener at a point away from a corner of the fastener. This increases the strength and life of the socket, reduces a risk of the fastener becoming locked or stuck in the socket, and reduces the risk of the fastener being stripped or the socket slipping on the fastener.

Devices or sockets having multi-sided outer surfaces are disclosed herein. An exemplary device can include an outer surface comprising multiple outer sides; an inner surface comprising multiple inner sides; a first end portion; a second end portion opposite the first end portion; a first recess extending from the first end portion toward the second end portion; and a second recess extending from the second end portion toward the first end portion. The second recess can include a cross-sectional dimension smaller than the cross-sectional dimension of the first recess. The device can be a hexagonal socket. In some embodiments, individual sockets are stackable on and within one another.

A boat motor propeller wrench with metallic motor nut fastener is described. The wrench includes a polymer handle including a first end and a second end opposite the first end, the second end including a tethering aperture. The wrench also includes a socket formed as one piece with the handle and extending from the first end of the handle substantially perpendicular thereto, the socket defining an aperture. The wrench further includes a metallic insert disposed within the aperture of the socket.

A boat motor propeller wrench with metallic motor nut fastener is described. The wrench includes a polymer handle including a first end and a second end opposite the first end, the second end including a tethering aperture. The wrench also includes a socket formed as one piece with the handle and extending from the first end of the handle substantially perpendicular thereto, the socket defining an aperture. The wrench further includes a metallic insert disposed within the aperture of the socket.

A reaction washer is optimized for lock-on, optional stiction ring and for a predetermined indentation depth of bidirectional serrations for secure reaction torque transfer during initial and full actuation of respective nut or bolt heads resting on it. An optional lock-on ring embedded around the reaction socket is ergonomically actuated to latch on and off underneath the reaction washer. Axial offset of the peak stress areas away from the actuation socket edges provides for reduced actuation socket diameter and consequently for the entire tool and system remaining substantially within radial assembly limits established for prior art actuation sockets alone. A coupling unit is attached to and tightened on a power torque wrench via a clamp tool utilizing the power wrench's own torque. A hand hold groove and a lock able snap release button offset from the coupling castle snap connection contribute to safe and ergonomic operation and system peak performance.

A reaction washer is optimized for lock-on, optional stiction ring and for a predetermined indentation depth of bidirectional serrations for secure reaction torque transfer during initial and full actuation of respective nut or bolt heads resting on it. An optional lock-on ring embedded around the reaction socket is ergonomically actuated to latch on and off underneath the reaction washer. Axial offset of the peak stress areas away from the actuation socket edges provides for reduced actuation socket diameter and consequently for the entire tool and system remaining substantially within radial assembly limits established for prior art actuation sockets alone. A coupling unit is attached to and tightened on a power torque wrench via a clamp tool utilizing the power wrench's own torque. A hand hold groove and a lock able snap release button offset from the coupling castle snap connection contribute to safe and ergonomic operation and system peak performance.

A sleeve structure includes a sleeve body, a tooth structure, a stopping structure, an elastic component and a resisting component. The sleeve body includes an opening hole. The tooth structure is disposed around an inner wall of the sleeve body, and includes a first groove and a second groove. The first groove and the second groove are disposed around the tooth structure, and the first groove is closer to the opening hole than the second groove. The stopping structure is disposed around the inner wall of the sleeve body, and the stopping structure is farther from the opening hole than the tooth structure. The stopping structure includes a through hole and an inner surrounding wall. The elastic component is disposed in the first groove and slightly protruded from the first groove. The resisting component is disposed in the second groove.

A sleeve structure includes a sleeve body, a tooth structure, a stopping structure, an elastic component and a resisting component. The sleeve body includes an opening hole. The tooth structure is disposed around an inner wall of the sleeve body, and includes a first groove and a second groove. The first groove and the second groove are disposed around the tooth structure, and the first groove is closer to the opening hole than the second groove. The stopping structure is disposed around the inner wall of the sleeve body, and the stopping structure is farther from the opening hole than the tooth structure. The stopping structure includes a through hole and an inner surrounding wall. The elastic component is disposed in the first groove and slightly protruded from the first groove. The resisting component is disposed in the second groove.

The disclosure relates to a screwdriver attachment for screws, which has a first shaft section with a first longitudinal axis, and a second shaft section with a second longitudinal axis. The second shaft section is coupled to the first shaft section via a linking disk. The first shaft section has a free end with which the screws are turned. The first shaft section and second shaft section are connected to one another by a spring element, which aligns the first shaft section in a starting position in which the first longitudinal axis and the second longitudinal axis are aligned coaxially. Screws can be readily turned with the screwdriver attachment according to the disclosure, even if there is a certain offset between the axes.