This is a A-LML311-A Wheel, 4" X 8" Tail Rim Assembly PN: LML311-AMain Description As Following : A-LML311-A Wheel, 4" X 8" Tail Rim Assembly P.N: LML311-A New tail rim wheel assembly, 4" x 8". Fits Hico / Howse rotary cutters.Bolt Circle: 5" Bolt Hole CenterCenter Hole: 3-5/8"Overall Diameter: 15"Width: 3-1/2" Stocked As: A-80A500 Found in Section & Models : Hay Tool Parts > Rotary Cutter Parts, Howse ROTARY CUTTER: 300C (2003>), Howse ROTARY CUTTER: 350C (2003>), Howse ROTARY CUTTER: 400C (2003>), Howse ROTARY CUTTER: 500C (2003>) Associated Items : New Also This is An Aftermarket Product And : New tail rim wheel assembly, 4" x 8". Fits Hico / Howse rotary cutters. Bolt Circle: 5" Bolt Hole Center Center Hole: 3-5/8" Overall Diameter: 15" Width: 3-1/2"