A multi-tool includes a pair of plates having respective handle portions, joint portions, and head portions, with the plates pivotally connected to each other at the joint portions, and to be pivoted relative to each other to establish an open position and a closed position of the plates. A bit holder is extended from an end of one of the plates, with the bit holder including a socket to receive an insert bit, the handle portion of the one of the plates including a storage area to receive and store the insert bit, and, in the closed position of the plates, the plates to overlap each other with the handle portion of the other of the plates to cover the storage area and the handle portion of the one of the plates.

The disclosure relates to a bit holder 1 for holding and driving a screw 3 with a screw head 4 into a fastening base, comprising a clamping region 2 for connecting the bit holder 1 to a driving tool and a bit receptacle 16 for inserting a bit suitable for driving the screw 3. The bit holder 1 has at least one magnet 7a-7f, 7.1a-7.1f arranged eccentrically relative to the bit holder 16 with one pole facing the screw head 4, wherein the magnet 7a-7f, 7.1a-7.1f is held floating on a magnet holder 8, 8.1 in relation to a bit 6 held in the bit receptacle 16, so that the pole face of the at least one magnet 7a-7f, 7.1a-7.1f can align according to the contour of the screw head 4 in order to hold the screw 3 on the bit holder 1 in such a way that the bit 6 engages torque-locked in a rotary driver contour 5 of the screw head 4.

A length adjustable connection structure contains: an adjustment assembly, an engagement assembly, and a receiving tube. The receiving tube includes an insertion accommodated, a coupling portion, a groove, a trench, and an elongated slot. The engagement assembly includes a fixing portion, a toothed portion, a fitting portion, a hexagonal hole, and a circular hole. The adjustment assembly includes a connector, a locating orifice, a hexagonal column, and a C-retainer. The hexagonal column of the adjustment assembly is received in the hexagonal hole of the engagement assembly so that the engagement assembly is connected on the hexagonal column, the C-retainer is engaged in the notch of the hexagonal column, and the adjustment assembly and the engagement assembly are accommodated in the receiving tube, hence the toothed portion of the fixing portion is engaged in the groove of the coupling portion, and the fitting portion is fixed in the trench.

A quick-release structure includes a shaft and a driving assembly. Two ends of the shaft have a receiving hole and a connecting hole, respectively. The driving assembly includes a rotating handle and a connecting rod. One end of the rotating handle is provided with an end cap. The connecting rod includes a pivoting end and a driving section. The rotating handle is pivotally connected to the pivoting end of the connecting rod so that the rotating handle can be pivoted relative to one side of the connecting rod. When in use, the driving section is engaged in the connecting hole, and the rotating handle can be turned to drive the shaft to rotate; when not in use, the driving assembly is inserted into the receiving hole, and the end cap is pressed against an outer end of the receiving hole to be positioned.

Exemplary embodiments are disclosed of socket adaptors for retaining impact sockets to impact tools.

A hand tool with insulation handle. The handle is made of an insulation material and is formed with a hollow portion (11) and an embedding groove (12). The embedding groove (12) is communicated with the hollow portion (11) and located on a front end (101) of the handle. The tool rod (20) includes a shaft (21) having a rear end (211) and a front end (212). The end plug (30) is made of the insulation material and includes a clamping section (31) and an abutting section (32). The rear end (211) of the shaft is positioned in the end plug through snapping the clamping section. The tool rod (20) is replaceablely inserted in the hollow portion (11) of the handle and protrudes from the handle.

An instrument for transmitting torque is described. The instrument comprises a torque receiving portion at a proximal end of the instrument, a torque delivering portion at a distal end of the instrument, and a flexible shaft extending between the torque receiving portion and the torque delivering portion. The flexible shaft comprises torque transmitting elements coupled in series along a longitudinal direction of the shaft. A female coupling feature of a torque transmitting element comprises a notch and a male coupling of an adjacent torque transmitting element comprises a protrusion sized to fit into the notch. The notch has a constant width or a narrowing width starting from an outer surface of the torque transmitting element comprising the notch.

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 socket adaptor includes a shank, a body movably mounted on the shank, a detent movably arranged between the shank and the body, and a magnetic device. The magnetic device includes a limiting member and a magnetic member. The limiting member has a proximal end fixed to an end of the shank, a distal end opposite to the proximal end, and a containing hole formed at the distal end. The magnetic member is arranged in the containing hole.

An ergonomic manual driver includes a handle having ergonomic recesses. A manual driver includes a shank and a handle attached to the shank. The handle includes a proximal portion, a middle portion, and a distal portion. The distal portion has a distal portion distal end cross section that includes polygonal perimeter line segments joined by intervening perimeter segments. The distal portion has a distal portion proximal end cross section that includes polygonal perimeter line segments joined by intervening perimeter segments. Orientations of the polygonal perimeter line segments of the distal portion distal end are offset rotationally by 15 degrees to 45 degrees around the shank axis relative to the polygonal perimeter line segments of the distal portion proximal end. The distal portion comprises distal portion recesses, which extend from the distal portion proximal end to the distal portion distal end.