Oregon 396-748 Kubota G6 Replacement Lawn Mower Blade 18-5/8-Inch Center hole: 11/16" Greater width and thickness extends blade life and allows for longer lifting arch to improve bagging and mulching Tungsten carbide is fused into the blade  creating an ultra-hard layer at the cutting edge and increasing the time between sharpening The aggressive blade angle increases air flow to push debris up-and-out for superior bagging or side discharge Replacement for major brand: Kubota 18-5/8" Length, 11/16" Center, 3" Width, 0.250" Thickness, 1" Lift Replaces Kubota K5231-92340, K5617-97590, K5617-34330, K5617-97530 Kubota (3) for 54" Cut, Fits on Kubota models ZG2354 and GR2120, Heavy Duty, High Lift Blade Equipped with X-Tended Cutting Length to improve cutting efficiency and have up to twice the cutting length. Great for Mulching. 5 Made with Fusion technology that applies a tungsten carbide coating that is designed to keep cutting edges sharper longer.