Blade for lawn tractor mower mower 476 487 490 494 496 497 498 720 760 AR50 MTR50 34" and 50" double blade A: 437mm B: 10mm C: 8 mm D: 64mm E: 4mm F: 50mm A: diagonal blade length B: centre hole dia. C: centre hole dia. D: distance between centres of positioning holes E: blade thickness F: blade width MTD Code: R301010 Original code: 7420120 7420171 AT