Lawn mower blade compatible MTD, Yard Man, Gutbrod Lawn mower blade Deluxe Models 53S Features: Length (mm): 533 Centre hole (mm): 10 Outer hole (mm): 8.1 Centre-to-centre distance (mm): 63.5 Weight:793 g 13270101 Part No. : Reference No. : 742-0124B, 742-0124 MTD, Yard Man, Gutbrod