Proto extra thin open end wrenches have a satin finish for corrosion resistance and a slip-resistant grip and are used when high leverage or distance is required. Their ultra-thin profile and long handle enable improved access to hard-to-reach fasteners. These wrenches have openings designed to cover screws, tappets and locknuts without excessive overhang. Choose from a broad range of Proto extra thin open end wrenches, available in head thicknesses of 3/16 inch and 7/32 inches on Raptor Supplies.