Accessories and add-ons to hop up and specialize Park Tool repair stands.Installs onto the clamps found on most Park Tool repair stands to more securely hold D-shaped seat posts by converting one jaw profile to a flat surfaceUseful for bikes with D-shaped seat posts and other non-traditional designs that would cause a less-than-ideal fit in traditional repair stand jawsDesigned to fit over a clamp's existing jaw covers and is easy to remove and install by hand, making it a convenient accessory for your repair stand Park Tool Stand Accessories Repair Stand Accessory UPC: 763477516473