Blade for lawn tractor lawn mower for 21" deck A: 525mm B: 9.5mm C: 9.5mm D: 70mm E: 5mm F: 66mm A: Diagonal blade length B: Centre hole dia. C: Centre hole dia. D: Centre hole dia. D: Centre hole dia. E: Blade thickness F: Blade width SNAPPER Code: R302730 Original Code: 2883592 AT