The Cub Cadet 918-04217 Lawn Tractors Spindle Assembly supports mower blade rotation on compatible lawn tractor cutting decks. It provides a mounting point for the blade and helps transfer rotational movement through the deck's drive system for consistent cutting performance. This assembly is a practical replacement for a worn, damaged, or noisy spindle that may affect blade movement ... https://www.wholetoolbox.com/cub-cadet-918-04217-lawn-tractors-spindle-assembly/918-04217.html