(3 Pack) Oregon Premium Replacement 17" x 2 1/2" High Lift Lawn Mower Deck Blade | 91-508 91-525 92-158 96-323 This is a Brand New Premium Replacement Lawn Mower Deck Blade Top Quality Premium Replacement Replacement Part! 17" x 2 1/2" 5/8" Center Hole Diameter 32" Cut Using 2 Blades / 50" Cut Using 3 Blades