Metal U-profile idler pulley for lawn tractor lawn mower External Ø: 63mm Hole diameter: 9.5mm Internal Ø: 51mm Throat length: 22mm BOLENS Code: R301050 Original Code: 1710566 ALSO COMPATIBLE WITH MTD R. O: 7560137 ALSO COMPATIBLE WITH NOMA R.O. 27332 ALSO COMPATIBLE WITH SNAPPER R.O. 13850 ALSO COMPATIBLE WITH TORO R.O. 34244 ALSO COMPATIBLE WITH WHEEL HORSE R.O. MV8821 AT