The Lisle Dual Drive Oxygen Sensor Wrench is the perfect tool for removing and installing oxygen sensors in hard-to-reach areas. This wrench features a unique dual drive design that allows you to use either a 1/2-inch square drive or a 3/8-inch hex drive, giving you maximum versatility in tight spaces. The 12-point design ensures a secure grip on the oxygen sensor, while the extra-long handle provides extra leverage for easy removal and installation. This wrench is made of high-quality steel for maximum strength and durability, and is designed to last for years of reliable use.