Includes 2 blades and 2 spindles with all hardware and pulleys  Spindle Replaces OEM Part Numbers: Compatible with Husqvarna 174356, 532174356, 532174358, 532192656, 539107515, 587125201 Height 5-9/16" Spindle Assembly Replaces Husqvarna OEM 532174356 Blade Replaces OEM Part Numbers: Compatible with Husqvarna 403107, 503405380, 532403107, 532405380 Compatible with: Husqvarna: Z246, Z246i, RZ 4621, RZ 4622T RZ 4623, RZ 46i Optimize Your Mowers Cutting Power and Ability Blade Specs: Length 22 13/16" Center Hole 5pt Star Known Compatibility with the Following Brands: AYP, Husqvarna, Jonsered, Ariens, Craftsman, Poulan, Sears, Poulan Pro, Redmax, Gravely, Stens Known Compatibility with the Following Models: Z246, Z246I, RZ 4621, RZ 4622T RZ 4623, RZ 46I  Replacement for the Following OEM MPN's: 174356, 174358, 532174356, 532174358, 532192656, 539107515, 587125201, 532 17 43-58, 21546611, 403107, 405380, 40S380, 531309715, 532403107, 532405380, 33266, 503405380, 575937901, 777405380, PP21011, 285-108