MTD lawn tractor mower blade MTD: 15.5-42, 17. 5-42, 17542, 13AM772S329, 13AM775S308 13AN772S329, 13AN775S308, 13AN77KS309, 13AP90KS309, 13AP90YS371 13AP91AS330, 13AP93AS330, 13AT77KS329, 13AT93GS319, 13AV90KS309, 13AX91AS330 13BP91AS330, 13BX91AS010, 13WX78KS066, 17AE2ACS603, 17AE2ACS678 17AF2ACS309, 17AF2ACS330, 17AF2ACS678, 17AFCACS330, 17AICACS603 17ARCACS330, 17BICACS603, 17BICBDS603, 17WF2ACS011, 742 RL, Bronco 42 Colt XP42, HVT4200, LTX1042, P170 HZ-S, P220 HZ-S, Pony, RZT42 RZTL42, RZTS42, TB4216, TB4220, YM20-42 TORO: 13AX90RS848, 13AX91RS848, LX423, LX427 Features: Length: 537 mm Centre hole diameter: 6-point star Side hole diameter: 8.2 mm Side hole distance: 63.5 mm Code: 122-252 Original part number: 742-04308, 742-04312, 942-04308, 942-04312 MTD