Multiple attached lanyard systems for attaching to a power tool, with each lanyard system comprising a lanyard attached to a driver piece holder that holds a driver piece and is connected to a retraction system. The multiple attached lanyard systems providing a different driver pieces that can be selected by pulling each driver piece out of its attached lanyard system, extending the driver piece past a driver piece receiver and inserting the driver piece into the driver piece receiver.

A multi-tool includes a body having a top face and a bottom face. At least one opening extends from the top face to the bottom face. The at least one opening is sized and configured to receive a finger of a user. A perimeter face connects the top face and the bottom face. The perimeter face includes a convex portion spaced from the at least one opening in a first direction. The convex portion is configured to contact a palm of the user. The body also includes two or more tools formed in the body.

A multi-tool includes a body having a top face and a bottom face. At least one opening extends from the top face to the bottom face. The at least one opening is sized and configured to receive a finger of a user. A perimeter face connects the top face and the bottom face. The perimeter face includes a convex portion spaced from the at least one opening in a first direction. The convex portion is configured to contact a palm of the user. The body also includes two or more tools formed in the body.

A combat vehicle rescue tool for operating a combat lock to open a door of a combat vehicle by engaging an exterior mechanical rescue coupler includes a handle having a first end extending in to a first forked arm and a second forked arm. A selectable angle end wrench includes a box wrench which is sized to fit an exterior mechanical rescue coupler of a combat vehicle door. A rectangular stem of the end wrench has at least three angled faces on a rectangular stem end opposite to the box wrench. A detent mechanism engages each of the at least three angle faces and the pair of face surfaces to set a predetermined angle of the selectable angle end wrench with respect to a long axis of the handle. A spare fastener pin can be threadingly stored in the end face of the tapered end of the tool.

A cartridge tool set comprising a body having a joint portion at each end of the body, the joint portion having a screw hole axially recessed on the end face of the joint portion, the screw hole having a screw surface formed on the inner surface of the screw hole; and a tool portion detachably connected to a tool member.

A cartridge tool set comprising a body having a joint portion at each end of the body, the joint portion having a screw hole axially recessed on the end face of the joint portion, the screw hole having a screw surface formed on the inner surface of the screw hole; and a tool portion detachably connected to a tool member.

A solid state tool system includes a first solid state tool, a second solid state tool, and a third solid state tool. In a first mode, the first solid state tool, the second solid state tool, and the third solid state tool are coupled to one another in a storage configuration. In a second mode, the first solid state tool is used as a tool by itself. In a third mode, the second solid state tool is used as a tool by itself. In a fourth mode, the third solid state tool is used as a tool by itself. In a fifth mode, the first solid state tool is coupled to the third solid state tool and used as a first combination tool. In a sixth mode, the second solid state tool is coupled to the third solid state tool and used as a second combination tool.

A solid state tool system includes a first solid state tool, a second solid state tool, and a third solid state tool. In a first mode, the first solid state tool, the second solid state tool, and the third solid state tool are coupled to one another in a storage configuration. In a second mode, the first solid state tool is used as a tool by itself. In a third mode, the second solid state tool is used as a tool by itself. In a fourth mode, the third solid state tool is used as a tool by itself. In a fifth mode, the first solid state tool is coupled to the third solid state tool and used as a first combination tool. In a sixth mode, the second solid state tool is coupled to the third solid state tool and used as a second combination tool.

A blade mounting device allows a blade of a pushing cut tool that cuts a workpiece by pushing a cutting edge forward to be mounted on an impact tool. This blade mounting device has a blade mounting portion for mounting the blade on the blade mounting device and a tool mounting portion secured to the blade mounting portion in order to mount the blade mounting device on the impact tool. The blade mounting portion has a front end portion where an inverted tapered hole complementary to an inclined shape surface formed on a tang of the blade is formed. The tool mounting portion is provided with a through hole perpendicular to the center axis and a center hole that reaches a through hole from a front side end surface of the tool mounting portion along the center axis.

A blade mounting device allows a blade of a pushing cut tool that cuts a workpiece by pushing a cutting edge forward to be mounted on an impact tool. This blade mounting device has a blade mounting portion for mounting the blade on the blade mounting device and a tool mounting portion secured to the blade mounting portion in order to mount the blade mounting device on the impact tool. The blade mounting portion has a front end portion where an inverted tapered hole complementary to an inclined shape surface formed on a tang of the blade is formed. The tool mounting portion is provided with a through hole perpendicular to the center axis and a center hole that reaches a through hole from a front side end surface of the tool mounting portion along the center axis.