Blade for lawn tractor mower HR2150 HR2160 HRA536 A: 525mm B: 24mm C: 14.5mm D: 88mm E: 4mm F: 57 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: R302739 Original code: 72511VB3E41 AT