Blade for lawn tractor mower mower K20 SINCE 1997 TYPE 11A RECTANGULAR TOOTH BLADE A: 508mm B: 17x23mm C: 7mm D: 65mm E: 3.5mm F: 54mm A: diagonal blade length B: centre hole dia. C: centre hole dia. D: distance between centre holes E: blade thickness F: blade width MTD Code: R302644 Original code: 9420640 7420640 AT