Fits: Husqvarna 50, 51, 55, 55 Rancher, 154, 254( before S/N 345-0001 ),262( before S/N 345-0001 )Partner P5100*Does not include bearing
Bearing #ORE11893 (Click on the link below for replacement parts)Rim #ORE18720
Pitch/Teeth: 3/8"-7