Blade for lawn tractor mower 21" flat mower FROM 1983 TO 1989 A: 531mm B: 10mm C: 10mm D: 63mm E: 3mm F: 57mm A: diagonal blade length B: centre hole dia. C: centre hole dia. D: centre hole dia. D: centre hole dia. E: blade thickness F: blade width MURRAY Code: R302473 Original Code: 22860HT AT