Lawn Mower Hydro Cogged Belt ,Replace Lawn Mower Part # Hus-qvarna 574870901; Exmark/To-ro 115-9613-SL, 115-9613, Gates 7007BR, 6780BR These are drive belts with width :1/2" and length : 75 1/4" Fit To-ro TITAN ZX4800, ZX4820, MX4880, ZX5400, MX5480, ZX6000, MX4800, MX5400, MX6000 Fit Hus-qvarna Most FD 52M, FD 61M, MZT 52, MZT 61, MZT 61 BF, MZ 52, MZ 5224 S, MZ 61, MZ 6128, MZ 6128 BF, MZ 28ZT BF, MZ 5424 SR and MZT 61 BF series mowers 574870901 Lawn Mower Hydro Belt Compatible With Hus-qvarna FD52M FD61M MZ52 MZ61 MZ5424S MZ6128 MZT52 MZT61 Series Mowers,1/2" x 75 1/4"