KIT INCLUDES THREE SPINDLES AND THREE BLADES. THE SPINDLES REPLACE FIT PART NUMBERS 532 17 43-56, 532 17 43-58, 539 10 75-15, 174356, 174358, NHC 251-0608, 82-015, 7-03179, 22-903, AND 11014. MOUNTING HOLES ARE TAPPED, INCLUDES BLADE BOLT 174365, PULLEY LOCK NUT 178342, AND SPACER 129963 OR 187690. GREASE FITTING IS LOCATED ON TOP OF SPINDLE. THE BLADES REPLACE PART NUMBERS 195-062, 173920, 180054, 532180054, 532173920, 95-062, AND 539107519. LENGTH: 16 5/8" CENTER HOLE: 5PT. STAR OUTER HOLE: 5/16" CENTER TO CENTER: 3-15/16". MOWERS WITH A 48" DECK REQUIRE THREE BLADES.Warning:Lead-Nickel-Cancer and Reproductive Harm