A wrench includes a body having a head and a handle portion defining a longitudinal axis. The wrench includes a first jaw coupled to the head with the first jaw including first teeth and an edge. The edge defines a width of the first jaw. The wrench includes a second jaw extending through an aperture of the head with the second jaw including a threaded portion and second teeth. The wrench includes an actuator coupled to the threaded portion of the second jaw such that rotation of the actuator relative to the second jaw moves the second teeth relative to the first teeth. A length is measured from the edge of the first jaw to the second end of the handle portion parallel to the longitudinal axis. A ratio of the width of the first jaw over the length is less than 0.06.

A high strength wrench includes a head portion, a shaft and a handle. A length of the shaft is multiple times of a length of the handle. At least one slot extends along a longitudinal direction of the shaft and is formed at a circumferential surface of the shaft. A cross section shape of the shaft has a structural profile of an outer side with a relatively greater thickness and an inner portion of a relatively smaller thickness. Accordingly, the shaft has a greater structural strength to allow the wrench to bear operations of high torque.

Fittings that generally include a unitary body having an outer surface and an inner lumen forming a void within said unitary body. The lumen is configured to receive threads for mating with the threads of a female sub end of a pipe or tube. The outer surface includes at least one aperture for receiving a tool that can be inserted within said aperture so as to rotate the fitting about an axis that extends through the lumen of the unitary body. The at least one apertures provide a safe and convenient way to tighten and loosen the fitting during the process of coupling pipe or tubing.

A dental instrument is configured to reduce user discomfort and increase control over the surgical edge of the instrument. The invention further discloses a dental instrument having a replaceable blade.

A screwdriver comprises a handle including a butt and a shank extending from the handle and including a tip. The butt includes a first indicating element having a shape corresponding to the tip and a plurality of second indicating elements arranged around the first indicating element. Each of the second indicating elements has the shape.

A wrench includes a body having a head and a handle portion defining a longitudinal axis. The wrench includes a first jaw coupled to the head with the first jaw including first teeth and an edge. The edge defines a width of the first jaw. The wrench includes a second jaw extending through an aperture of the head with the second jaw including a threaded portion and second teeth. The wrench includes an actuator coupled to the threaded portion of the second jaw such that rotation of the actuator relative to the second jaw moves the second teeth relative to the first teeth. A length is measured from the edge of the first jaw to the second end of the handle portion parallel to the longitudinal axis. A ratio of the width of the first jaw over the length is less than 0.06.

An orthopaedic driving instrument including a first end portion, a second end portion opposite the first end portion, and a central portion, intermediate the first and second end portions, comprising a central section having an outer diameter representing a maximum outer diameter of the driving instrument. The first end comprises a first driving interface sized and shaped to, in operation of the instrument, engage a screw interface of a screw for applying torque to the screw. The second end comprises a second driving interface sized and shaped as the size and shape of the first driving interface.

A hand tool embossed structure formed on a hand tool handle includes a plurality of anti-slip units embossed relative to an outer surface of the hand tool handle. Each of the plurality of anti-slip units defines a first distance along a first direction and a second distance along a second direction orthogonal to the first direction. The second distance is less than the first distance to produce a directional anti-slip characteristic.

A device for forming a union of pipe end includes two pipe connectors, each configured for attachment to an end of a length of pipe at one end and for joining to the other of the two connectors at the other end and a nut having a bore with internal threads configured to mate with outer threads on the outer surface of one or both of the two pipe connectors. The outer lateral surface of the nut includes a plurality of handle connection structures. The device includes a handle for increasing the amount of manually-generated torque on the nut during tightening or loosening of the nut with respect to the outer threads. The handle has a nut attachment end configured to engage the handle connection structures and is provided with a mechanism for reversibly locking the handle to any of the plurality of handle connection structures of the nut.

An only open end wrench attachment device incorporates a pommel to prevent slippage of the user's hands, a griping section with a plurality of grooves, a cylindrical length hilt section between the gripping area and the attachment apex to provide various lengths and an attachment apex that provides both parallel and angle attachment for an open end wrench, thereby providing a tool which is solid with no moving parts and is designed to be easily scaled from 9 inches long to 6 feet in length to accommodate wrenches both metric and standard from ¼ inch to 5 inch.