The Yard Man 918-0411A Lawn Tractor Spindle Assembly helps support smooth and reliable blade rotation for consistent mowing performance. Designed as a replacement spindle assembly, it connects the mower deck blade to the pulley system and allows the blade to rotate properly when power is transferred through the deck drive. Proper spindle function helps maintain blade stability, reduce... https://www.wholetoolbox.com/yard-man-918-0411a-lawn-tractor-spindle-assembly/918-0411A.html