Stens Brand Flat Idler / For AM135773Pack Size:1 For AM135773Oregon 34-104, NHC 276-9477, Rotary 14255 For X series, LA series, L series, 105, 115, 145 and 155CHeight: 1 3/8 ", ID: 3/8 ", Idler F: 1/4 ", Explanation of Letters: Refer to the drawing by clicking on More Info, OD: 3 7/8 ", Idler B: 3 ", Made By: An OEM supplier, Idler V: 1 3/8 ", Idler D: 1 ", Idler C: 3/8 ", Heavy-Duty/Standard: Heavy-duty, Material: Metal, Idler A: 3 7/8 ", Idler H: 5/16 ", Idler E: 1/2 "OEM Cross Reference: For AM135773Competitor:Oregon 34-104, NHC 276-9477, Rotary 14255 Model: For X series, LA series, L series, 105, 115, 145 and 155CSpecification:Height: 1 3/8 ", ID: 3/8 ", Idler F: 1/4 ", Explanation of Letters: Refer to the drawing by clicking.