Flat Idler / Exmark 109-4076Pack Size:1Exmark 109-4076, Toro 109-4076J. Thomas ID-0002, NHC 276-9415, Rotary 12300Exmark Lazer Z and Frontrunner; Toro Z MasterIdler E: 1/2 ", Idler F: N/A ", Idler H: 1/4 ", Idler K: 1 ", Idler V: 1 1/4 ", ID: 3/8 ", Material: Plastic, For explanation of letters please refer to the drawing by clicking on More Info, Idler C: 3/8 ", OD: 3 3/16 ", Idler B: 2 3/4 ", Height: 1 1/4 ", Idler A: 3 3/16 "