Blade for lawn tractor lawn mower 38" flat A: 490mm B: 6 points C: 8mm D: 62mm E: 5mm F: 63mm A: Diagonal blade length B: Centre hole dia. C: Centre hole dia. D: Centre hole dia. E: Blade thickness F: Blade width MTD Code: R320122 Original code: 7420610 9420610 AT