Blade for lawn tractor mower HRX537C with hole Ø 21mm A: 530mm B: 21mm C: 10mm D: 88mm E: 3mm F: 80mm A: diagonal blade length B: centre hole Ø C: positioning hole Ø D: positioning hole Ø E: blade thickness F: blade width HONDA Code: R303428 Original Code: 72511VH7000 AT