Heavy-Duty Flat Idler / John Deere AM135773Pack Size:1John Deere AM135773NHC 276-9477, Oregon 34-104John Deere X series, LA series, L series, 105, 115, 145 and 155CIdler E: 1/2 ", Idler F: 1/4 ", Idler H: 5/16 ", Idler K: 1 ", Idler V: 1 3/8 ", ID: 3/8 ", Material: Steel, For explanation of letters please refer to the drawing by clicking on More Info, Idler C: 3/8 ", Made By: An OEM supplier, OD: 3 7/8 ", Idler B: 3 ", Height: 1 3/8 ", Idler A: 3 7/8 "