Blade for lawn tractor mower HR21 HR214 HR215 A: 525mm B: 21mm C: 10mm D: 88mm E: 4mm F: 57 mm A: Diagonal blade length B: Centre hole dia. C: Centre hole dia. D: Centre hole dia. D: Positioning hole dia. E: Blade thickness F: Blade width HONDA Code: R301653 Original code: 72511960004 72511VA2000 AT