Blade for lawnmower mower HRB423-K1-SG-PG A: 420mm B: 28mm C: 6.5/11 mm D: 50/95 mm E: 2mm F: 70 mm A: diagonal blade length B: centre hole dia. C: positioning hole dia. D: positioning hole dia. E: blade thickness F: blade width HONDA Code: R302757 Original Code: 72511VA9H50 AT