Heavy-Duty Flat Idler / John Deere AM132764Pack Size:1John Deere AM132764NHC 276-9401, Oregon 78-128John Deere LT180, LT190 and X series mowers; 42, 44 and 48 snowthrowersIdler E: 1/2 ", Idler F: 1/4 ", Idler H: 5/16 ", Idler K: 5/16 ", Idler V: 7/8 ", ID: 1 3/16 ", Material: Steel, For explanation of letters please refer to the drawing by clicking on More Info, Idler C: 1 3/16 ", Made By: An OEM supplier, OD: 3 5/8 ", Idler B: 2 3/4 ", Height: 7/8 ", Idler A: 3 5/8 "