The Ariens Company 30138800 Lawn Tractor Aluminum Spindle Assembly supports proper blade rotation and cutting operation for compatible Ariens lawn tractor applications. The spindle assembly connects the mower blade to the deck drive system and allows the blade to rotate as power is transferred during operation. This assembly is a practical replacement for a worn, damaged, or faulty sp... https://www.wholetoolbox.com/ariens-company-30138800-lawn-tractor-aluminum-spindle-assembly/30138800.html