A tool for engaging a spark plug is provided. The tool includes a socket with an interior sidewall that forms at least a portion of a socket chamber. An insert may be positioned within the socket chamber. The insert has at least a rigid first component and a compliant second component configured to nest within the rigid first component.

A magnetic attraction socket structure includes a socket body and a magnetic attraction assembly mounted inside the socket body. The socket body includes an installation section formed therein at a top of which a stepped surface is formed. A circumferential groove is formed in an inner circumference of the socket body to correspond to a bottom of the installation section for receiving and holding an elastic ring clip therein. The magnetic attraction assembly has a top positioned against the stepped surface of the socket body. The magnetic attraction assembly includes an insulation jacket and an annular magnetic body, in which the insulation jacket having no permeability includes a receiving hole to receive the annular magnetic body to fit therein. The insulation jacket includes a stop on an inner circumference of the receiving hole for retaining the annular magnetic body in position.

A vehicle O.sub.2 sensor wrench attachment is made integral with a safety latch for an air hammer rod. The safety latch comprises a jaw assembly that has a swivel tooth that is manually moved from an open position to allow insertion of the air hammer rod into the mouth. For a working mode using the air hammer to hit the jaw assembly, the tooth is moved to a locked mode. A ball and spring assembly ensures the air hammer rod, having a transverse rod, stays in the locked mode during operation.

A spark plug wrench is provided, including: a tubular body, including a working portion configured to be connected with a driving tool and a driving portion including a connection hole, the working portion including an assembling hole in communication with the connection hole; a socket base, disposed in the assembling hole, including a large diameter section radially abutted within the assembling hole, a small diameter section, a receiving hole configured for insertion of a spark plug, and receiving portions; and a plurality of positioning units, each of the plurality of positioning units including an elastic member and a positioning member, the elastic member and the positioning member being received in the receiving portion, the elastic member urging the positioning member so that the positioning member at least partially projects within the receiving hole for being engaged within a grooved portion of the spark plug.

A spark plug tool comprises a flexible cylindrical body with a cavity into which a spark plug may be inserted. The cylindrical body has ridges extending along at least a portion of the body between a first end having the cavity and an opposite end. Embodiments may include other features, such as a weight and/or gripping portion for ease of use.

The present invention is a ratcheting scrench, which allows for quick and easy removal of bolts, spark plugs, and nuts. The core components of the invention are a bolt and spark plug removing end separated by a ratcheting mechanism and a nut removing end. The invention can be used to remove bolts and spark plugs without requiring removal of the device from the tool which bolts are being removed from.

A socket assembly includes a socket, a lining and an annular magnet. The socket includes a hexagonal bore, six internal facets around the hexagonal bore, and two apertures in communication with the hexagonal bore. The lining includes a hexagonal block, two strips extending from the hexagonal block, and two bosses each formed on a corresponding one of the strips. The hexagonal block is inserted in the hexagonal bore, and includes a cavity, six external facets in contact with the internal facets of the socket, and six ridges each formed between two adjacent ones of the external facets. The annular magnet is inserted in the cavity. Each of the bosses is inserted in a corresponding one of the apertures. The annular magnet is squeezed tighter by the lining since the ridges are pressed tighter against an internal face of the socket as the lining is inserted deeper in the hexagonal bore.

A hand tool includes a handle, a socket and a connector. The connector includes a first end for connection to the handle and a second end for connection to the socket. The connector includes quick-release device. Thus, the second end of the connector can be connected to or detached from the socket easily.

A spark plug wrench is provided, including: a tubular body, including a working portion configured to be connected with a driving tool and a driving portion including a connection hole, the working portion including an assembling hole in communication with the connection hole; a socket base, disposed in the assembling hole, including a large diameter section radially abutted within the assembling hole, a small diameter section, a receiving hole configured for insertion of a spark plug, and receiving portions; and a plurality of positioning units, each of the plurality of positioning units including an elastic member and a positioning member, the elastic member and the positioning member being received in the receiving portion, the elastic member urging the positioning member so that the positioning member at least partially projects within the receiving hole for being engaged within a grooved portion of the spark plug.