Flat Idler / Snapper 7018574SMPack Size:1Murray 7018574, Simplicity 7018574, Snapper 7018574, Snapper 7018574SM, Snapper 1-8574Murray 1695967, 1696084, 2691080 and 2691085; Simplicity AC23420, MF130, MF2520 and Regent; Snapper Yard CruiserIdler E: 1/2 ", Idler F: 3/4 ", Idler H: 1/4 ", Idler K: 3/8 ", Idler V: 1 1/8 ", 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: 4 1/16 ", Idler B: 3 1/2 ", Height: 1 1/8 ", Idler A: 4 1/16 "