This is a new bearing assembly that fits Exmark tires with these part numbers 103-3797, 103-3799, 109-9124, 109-9125 and 109-9127. Size: 13X6.50-6. It includes two spacer nuts that replace part number 103-3051, two bearing cups that replace 1-633584, two bearing cone tapers that replace part number 1-633585, two seal caster that replace part number 103-0063, one axle assembly that replace 126-5361. Also includes mounting bolt, nut and dust covers.