Overview Similar Products –> Product Description Marathon A281 KIT 281 Resilient Mounting Kit BASE LENGTH – 11-5/8″ SHAFT HEIGHT – 3-1/2″ Used to add a resilient base to models having hubs only. Kit Includes: mounting base, 2 resilient rings, 2 latch assemblies, 2 end caps and a slinger. *USED WITH CAT# X507, X509 Product Videos Custom Field Product Reviews