Oregon 396-769 Gator G6 Blade, 19" Tungsten carbide is fused into the blade  creating an ultra-hard layer at the cutting edge and increasing the time between sharpening Center hole 7/8" Greater width and thickness extends blade life and allows for longer lifting arch to improve bagging and mulching The aggressive blade angle increases air flow to push debris up-and-out for superior bagging or side discharge Replacement for major brand: John Deere