The Tolsen 17089 is a 36 mm open-end slogging wrench designed for the most demanding tasks involving stubborn fasteners. Crafted from drop-forged Chrome Vanadium steel and heat-treated for high tensile strength, this tool is built to withstand the heavy shock resistance required when you use it in tandem with a sledgehammer to loosen or tighten large hex nuts and bolt heads. Its heavy-duty design makes it a reliable choice for professionals in mechanical workshops, auto maintenance, and construction, as well as for ambitious DIY projects. The robust Cr-V construction ensures that the 36 mm jaw remains stable under extreme pressure, providing the necessary leverage and durability for heavy industrial environments.