Deck Spindle replaces AM144608. Fits models X330, X350, X354, X370, X380, X390, X570, X940, Z335, Z345, Z355, Z375, Z535 and many more. Length: 5-3/4, Nut Size: 9/16, Blade Bolt Size: 12mm x 40. Replaces OEM: AM144608 Fits Models: x350, X330, X354, X370, X380, X390, X570, X940, Z335, Z345, Z355, Z375, Z535 Dimensions and Specifications: Length: 5-3/4"