Oregon 396-612 PK3 Gator G6 Blades -20 1/2" Pack of 3 Replacement for major brand: Kubota Fits: Kubota K5371-34330 Length: 20 1/2"; Width: 3.00"; Thickness: 0.250"; Center hole size: 7/8"; Air Lift: 1" Tungsten carbide is fused into the blade  creating an ultra-hard layer at the cutting edge and increasing the time between sharpening