Description: Wheel Bearing Kit contains (2) Rotary 9000 Cage Bearings ( 83-4740), (2) Rotary 8999 Retainer Bushings (130-0705), (1) Rotary 16310 Spanner Bushing ( 127-0068). Fits 126-3289 and 125-5580 Wheel Assemblies. Fits models MX 4800, MX 5400, and MX 6000. Fits models RAS710CKC, RAS720CKC, RAS720GKC, RAS740CKC, and RAS740GKC  Replaces OEM: (Please be sure of your OEM part number before purchase) 126-3289 125-5580  Specifications: Hight: 1.4 in Length: 8.75 in Width: 1.64 in