Blade for lawn tractor mower RIDER HN5220K new models with 42" cutter deck RIGHT ROTATION BLADE A: 540mm B: 6 points C: D: E: 3.5mm F: 79mm A: diagonal blade length B: centre hole dia. C: centre hole dia. D: distance between centre holes D: distance between centre holes E: blade thickness F: blade width MTD Code: R30396363 Original code: 7420671 74204025 74204081 AT