Heavy-Duty Flat Idler / Simplicity 1606554SMPack Size:1Simplicity 1606554SM, Simplicity 1607284NHC 276-9300, Ratio Parts 280-406Simplicity GTH-L, 7000 series, pre-1980 Landlord, pre-1980 Sovereign, 700 and 900 series, 1993 SovereignIdler E: 5/16 ", Idler F: 5/16 ", Idler H: N/A ", Idler K: 1 1/32 ", Idler V: 1 1/4 ", ID: 3/8 ", Material: Steel, Heavy-duty style, For explanation of letters please refer to the drawing by clicking on More Info, Idler C: 3/8 ", Made By: An OEM supplier, OD: 4 3/8 ", Idler B: 4 1/8 ", Height: 1 1/4 ", Idler A: 4 3/8 "