The 115-4668 Pinion Gear, 22" Drive Wheel Gear, designed with precision and durability for your lawn mower, is a vital component that ensures efficient and precise operation. Made from metal, this gear is specifically compatible with Toro 10604, 10605, and 10606 models, making it a perfect replacement for those in need of a self-propelled repair. The 12 tooth count provides a robust and reliable engagement with the 3-stage lawn mower shaft, enhancing the overall performance of your machine. With two gears in a pack, you can easily switch between the appropriate pinion gear for various lawn mower speeds, further optimizing your mowing experience. Rest assured that this gear is built to meet industry standards, ensuring longevity and reliability. Invest in this essential part and experience improved efficiency, accuracy, and reduced maintenance for your Toro lawn mower.