This item is a new replacement complete tail wheel assembly for several different makes and models of rotary cutters that use the 1-1/2" yoke (round post). Please also look carefully when comparing to other sellers. SPECIFICATIONS ** 15" x 4" Laminated tire ** Heavy duty greasable style bearing hub (not a cast or fabricated hub) with tapered bearings/races and seals. **Yoke (round shaft) diameter is 1-1/2" Comes with two 1-1/2" flat washers that are 1/4" thick and roll pin so it is harder to drop out. **4 bolt pattern which is industry standard **7" free play available on the shaft **from the bottom of the usable round shaft to the center of the roll pin hole is 7-1/4" **over all shaft length is 7-3/4" Everything you need to slide it on and get back to work. Please grease before using!