Blade for lawn tractor mower PR17 PR17AWD R418TS R418TSAWD R422TS R422TSAWD A: 390mm B: 12mm C: 8.5mm D: 40mm E: 4.5mm F: 60mm A: diagonal blade length B: centre hole diameter C: centre hole diameter D: distance between centre holes E: blade thickness F: blade width HUSQVARNA Code: R303933 Original part No.: 504490401 AT