Abstract: A quad wrench has a head including an internal guide, first and second crowns separated by said internal guide, each of said first and second crowns having a plurality of interior faces, and first and second bolt receiving spaces, each bolt receiving space being at least partially defined by an outer surface of said internal guide and some of said plurality of interior faces, and a shank connected to said head. Each bolt receiving space of each crown is configured to correspond to both a first certain size of bolt and a second certain size of bolt such that a bolt of either certain size received in the bolt receiving space can be rotated when force is applied to the shank, and each bolt receiving space of the quad wrench is configured to correspond to two different certain sizes of bolts.

Abstract: A rotary wrenching tool used on polygonal nuts, bolts and screws is disclosed. More particularly, the wrenching tool is a single piece rotary wrenching tool with a uniform interior having no moving parts and consisting of six or twelve inwardly projecting lobes of the same size that enable the wrench or socket to exert pressure on the flats of hexagonal objects away from the corners. This invention further relates to a duplex wrench operable on hexagonal fasteners measured by the metric, inch, or both systems. Within a defined range in one wrench, each wrench secures hexagonal objects measured by both inch and metric systems.

Abstract: A quad wrench has a head including an internal guide, first and second crowns separated by said internal guide, each of said first and second crowns having a plurality of interior faces, and first and second bolt receiving spaces, each bolt receiving space being at least partially defined by an outer surface of said internal guide and some of said plurality of interior faces, and a shank connected to said head. Each bolt receiving space of each crown is configured to correspond to both a first certain size of bolt and a second certain size of bolt such that a bolt of either certain size received in the bolt receiving space can be rotated when force is applied to the shank, and each bolt receiving space of the quad wrench is configured to correspond to two different certain sizes of bolts.

Abstract: A dual wrench includes: (1) a head with an internal guide and two crowns separated by the internal guide, each crown having a plurality of interior faces and a bolt receiving space, and (2) a shank connected to the head. The bolt receiving space of each crown is configured to correspond to both a first certain size of bolt and a second certain size of bolt such that a bolt of either certain size received in the bolt receiving space can be rotated when force is applied to the shank. The bolt receiving space of the dual wrench is configured to correspond to two different certain sizes of bolts.

Abstract: A rotary wrenching tool used on polygonal nuts, bolts and screws is disclosed. More particularly, the wrenching tool is a single piece rotary wrenching tool with a uniform interior having no moving parts and consisting of six or twelve inwardly projecting lobes of the same size that enable the wrench or socket to exert pressure on the flats of hexagonal objects away from the corners. This invention further relates to a duplex wrench operable on hexagonal fasteners measured by the metric, inch, or both systems. Within a defined range in one wrench, each wrench secures hexagonal objects measured by both inch and metric systems.

Abstract: A rotary wrenching tool used on polygonal nuts, bolts and screws is disclosed. More particularly, the wrenching tool is a single piece rotary wrenching tool with a uniform interior having no moving parts and consisting of six or twelve inwardly projecting lobes of the same size that enable the wrench or socket to exert pressure on the flats of hexagonal objects away from the corners. This invention further relates to a duplex wrench operable on hexagonal fasteners measured by the metric, inch, or both systems. Within a defined range in one wrench, each wrench secures hexagonal objects measured by both inch and metric systems.