Heavy-Duty Flat Idler / AYP 175820Pack Size:1AYP 175820, Husqvarna 532 17 58-20, Kees 107620NHC 276-9355, Oregon 78-052, Ratio Parts 22-953, Rotary 11633, Sunbelt B1AY46AYP 48" deck, 2003 and newerIdler E: 1/2 ", Idler F: 1/4 ", Idler H: 1/4 ", Idler K: 7/8 ", Idler V: 1 ", 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: 4 1/2 ", Idler B: 3 5/8 ", Height: 1 ", Idler A: 4 1/2 "