Check the listing for details. John Bean Hofmann Alignment Rack Rear Slip Plate Ball Transfer Bearing 6-3974. Condition: New. Listed at 26.99 USD. Automotive Equipment Solutions Alignment Rack Rear Slip Plate Ball Transfer Bearing. If your John Bean or Hofmann alignment rack has rear slip plates that are sticking and binding you may need new rear slip plate bearings. Our transfer bearings feature a ball support cup machined from sold steel. They are hardened and plated for maximum service life and feature a 390 lb. load capacity! (Compare to the OEM bearing capacity of 218 lbs.) What else can we help you find? Visit our eBay store! http://stores.ebay.com/autoshoptoolandsupply Disclaimer- The parts we offer are an O.E. alternative; they are not produced by O.E. Manufacturers such as Accuturn, Bosch, All Tool, Ammco, Coats, FMC, John Bean, Hennessy, Hunter, Kwikway, Hofmann, Snap-On, Van Norman, or similar manufacturers respectively.