The Toro 121-9107 Spindle Assembly helps maintain smooth and consistent blade rotation in compatible Toro lawn equipment. This mechanical assembly connects the mower blade to the deck and transfers rotational power to the blade for cutting grass. It is designed to support proper blade positioning and steady operation during mowing. When the original spindle becomes worn or damaged, re... https://www.wholetoolbox.com/toro-121-9107-spindle-assembly