Blade for lawn tractor mower ERMA 520 530ER 550 753 853 A: 525mm B: 17mm C: 11x12mm D: 40mm E: 3mm F: 64mm A: diagonal blade length B: centre hole dia. C: centre hole dia. D: distance between centres of positioning holes E: blade thickness F: width of blade MARAZZINI / MEP Code: R300590 Original code: 10140850 10700100 AT