Wheel Bearing Spacer / Exmark 1-633581Pack Size:1Exmark 1-633581, Exmark 633581, Scag 43584, Toro 1-633581, Toro 633581J. Thomas JT-328, Mow More WB10064, NHC 272-0273, Rotary 10064Exmark Lazer Z HP 44", 48" and 52" decksHeight: 5/8 ", ID: 3/4 ", OD: 1 1/8 "