A flexible wrench with an independent and separate wrench handle and an independent and separate wrench head. The wrench head is mounted to the wrench handle with a press-button locking mechanism having a pre-compressed spring that requires pressing both ends of the locking mechanism to release the locking position, improving safety to a user.

Disclosed is a combination screw and rivet fastener that couples a cover plate to a ratchet head. The fastener is inserted into the ratchet head and then screwed into a hole of the cover plate. Thereafter, the tip of the fastener opposite the fastener head is deformed in a rivet operation.

A socket includes a first section and a second section which formed at the first end of the first section. The first section includes multiple side faces located on the outside thereof, and a corner portion is formed between each of two adjacent side faces. At least one of the corner portions includes a recess defined therein, and a resilient positioning unit is located in the recess and partially protrudes beyond the open end of the recess. A passage is defined axially through the first and second sections. The resilient positioning unit in the at least one of the corner portions does not affect the feature to secure the socket to the wrench.

A standard ratchet wrench assembly having a handle socket member adapted to removably receive a ratchet drive extension member therein, such that a user can use the ratchet drive extension member to increase the moment force upon said standard ratchet wrench assembly when in use.

A hand tool with a function of preventing electronic shock includes a tool body, a basic insulation layer and a skidproof insulation layer. The basic insulation layer is formed on the tool body and has holes exposing a part of the tool body. The skidproof insulation layer is formed on the basic insulation layer to cover the holes. Annular protrusions are formed on the outer surface of the basic insulation layer or the inner surface of the skidproof insulation layer and are closer to edges of the basic insulation layer and the skidproof insulation layer than the holes. Therefore, it is possible to prevent electric shock caused by the seeping of moisture or liquid between the basic insulation layer and the skidproof insulation layer.

A connection device of a ratchet wrench includes a connection portion extending from the head of a ratchet wrench and having a receiving hole. A tool part includes a ball head and a driving portion which is connected to the ball head by a neck. The ball head includes multiple curved faces, and a ridge is formed between any two adjacent curved faces. A clutch device is mounted to the connection portion to secure or release the ball head of the tool part relative to the receiving hole of the connection portion. The ball head of the tool part allows the tool part to be tilt relative to the head of the wrench.

A clutch wrench device is a ratchet wrench that is able to grip when rotated back and forth even in minute radians so that it can be used in very tight spaces for tightening or loosening fasteners. The device uses a sprag mechanism that is able to frictionally lock the rotatable and non-rotatable parts together when rotated one direction and rotate freely when rotated the other direction.

The present invention discloses a method for manufacturing a manual tool, comprising: performing dual-frequency induction quenching on a first surface of a moment output part or a moment transmission part of the manual tool such that a quench-hardened layer is formed within a first depth range from the first surface of the moment output part to the interior of the moment output part or within a first depth range from the first surface of the moment transmission part to the interior of the moment transmission part, the hardness of the quench-hardened layer being higher than that of the body of the moment output part or the moment transmission part; the dual-frequency induction quenching being configured to simultaneously feed or introduce a high-frequency current and an intermediate-frequency current to the same induction coil to simultaneously heat the first surface of the moment output part or the first surface of the moment transmission part by the high-frequency current and the intermediate-frequency current, and then the moment output part or the moment transmission part being cooled and quenched. The present invention also discloses a manual tool manufactured by the above method. The manual tool subjected to double-frequency induction quenching according to the present invention has good abrasion resistance.

Aspects of the present disclosure generally pertain to a hand tool that combines features of a ratchet and a wrench. Aspects of the present disclosure more specifically are directed toward a ratchet/wrench including at least one additional wrench or spanner integrated in its handle. The hand tool may preferably include wrench sizes most common to a particular task or line of work.

A ratchet wrench is provided, including: a handle, a moving member and a positioning mechanism. The moving member is rotatably connected with the handle about a rotational axis and includes a driving head having a driving axis parallel to the rotational axis. The moving member is swingable between a folded position and an operating position. The positioning mechanism is disposed between the handle and the moving member and includes at least one restricting portion and a positioning member, and the positioning member is movable between a locking position and a release position. When the positioning member is in the locking position, the positioning member is interfered with one said restricting portion in a swinging direction of the moving member; when the positioning member is in the release position, the positioning member is free of interference with the at least one restricting portion in the swinging direction.