Solid Flat Free Front Wheel Fits Exmark, Toro. 32, 36, 48, 52" Walk Behind Mowers 9X350-4 5/8 Open Cage Bearing. Solid Flat Free Front Wheel Fits Exmark, Toro 32, 36, 48, 52" Walk Behind Mowers 9X350-4 5/8 Open Cage Bearing.