Force 685A1440 Box End Wrench Head 40mm (base 14x18mm) a robust and versatile tool engineered for precision performance. With a 40 mm size and designed to fit a 14x18mm base, this wrench head offers a secure and reliable grip for various applications. Crafted with durability in mind, it ensures optimal torque transmission while minimizing the risk of fastener rounding. Whether you're a professional mechanic or a DIY enthusiast, this high-quality wrench head from Force is an indispensable addition to toolkit.