Wrench also known as open wrench (or called wrench), mainly divided into double-headed wrench and single-headed wrench. Its wide range of roles, mainly in mechanical maintenance, equipment, home improvement, auto repair and other areas. Double headed wrench is a universal tool for the assembly of machine tools or spare parts and transportation, maintenance of agricultural machinery necessary hand tools. Double headed wrench made of high-quality carbon tool manufacturing, a forging molding, advanced technology assurance.
