The perfect addition to your lawn mower maintenance routine, our 2pcs pinion gears are a critical component of the smooth cutting performance of Toro models 22 personal models. Designed to be compatible with gears 131-5399, these metal drive gears ensure reliable and stress-free operation, delivering maximum longevity and efficiency. With a compact and robust design, these gears are easy to install, providing a hassle-free solution for any mower user in need of durable mower parts. Invest in lasting mower parts and enjoy smooth and consistent cutting performance with our 2pcs pinion gears.