Lawn mower blade compatible MTD, Yard Man, Gutbrod Lawn mower blade for lawn mower mower models 54", RZT54 Features: Length (mm): 470 Centre hole (mm): star, 6-point Outer hole (mm): 8.5 Centre-to-centre distance (mm): 63.5 Weight: 1.25 kg 13271070 Part no.: Reference no.: 742-0677B , 742-0677 MTD Yard Man Gutbrod SR m