This replaces several Bush Hog model mowers but please double check that you need the 1-1/2" round post on the fork and NOT the 1-1/4" (which we sell as well). Fits Bush Hog 268 278 255 256 257 275 276 277 285 286 287 1287 290 series SQ142 SQ148 SQ160 SQ172 SQ184 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!