A&I Predator 21", 29/32" Mulching Mower Blade (Set of 6) - B1PD5179,6 Predator blades provide the flat blade design preferred by most commercial mowers with an extended cutting length for increased cutting efficiency Mulching Blade. Fits 60" HC Deck. Center Hole 29/32" Length 21" Replaces M163983 Thickness .250" Type Toothed Width 2-1/2" Crossed From: M163983 JOHN DEERE M96730 SHOUP 396-730 OREGON 396730 OREGON This is an aftermarket product, not an OEM. A physical address must be provided, NO P.O. BOXES. Thanks for looking!