Abstract: An upper, aluminum insert is positioned between an upper, non-aluminum jaw of a clamp and an aluminum part of a vehicle, and a lower, aluminum insert is positioned between a lower, non-aluminum jaw of the clamp and the aluminum part of the vehicle to shield the aluminum part of the vehicle from the jaws to prevent galvanic corrosion.

Abstract: The invention is an adjustable ratchet-style self-tightening wrench. The a wrench having a main body or handle, including a fixed jaw and a moveable jaw assembly which is pivotably attached to the main body. The handle has a first and a second end. The first end is for holding the wrench and applying force. The second end of the handle is shaped to form a fixed jaw having a substantially planar work surface. The handle also includes a recess near the fixed jaw end of the wrench with two leaf springs that are positioned to be biased against a pivot lug attached to the carriage block. The moveable jaw assembly includes a moveable jaw member, a traveler carriage block and a traveler carriage nut. The moveable jaw member has a traveler carriage segment at one end and a jaw working surface at it's other end. The moveable jaw assembly is pivotably attached to the main handle via a pivot lug that protrudes from the carriage block into the main handle recess.