Heavy-Duty V-Idler / Exmark 1-633166Pack Size:1Exmark 1-633166, Exmark 633166, Toro 1-633166, Toro 633166J. Thomas JT-271, NHC 276-9104, Rotary 9793, Sunbelt EM-53, Sunbelt B1EM53Exmark 52", 60" and 72" Lazer ZIdler E: 1/2 ", Idler F: 1/2 ", Idler H: N/A ", Idler K: 1 1/8 ", Made By: An OEM supplier, ID: 5/8 ", Material: Steel, Pump drive, For explanation of letters please refer to the drawing by clicking on More Info, Idler C: 5/8 ", OD: 6 ", Height: 1 1/8 ", Idler A: 6 "