The Pro Bar System consists of a Pro Bar, Pro Bar Pin & Lynch Pin Clip and is used to connect most of Premier's components and accessories. Pro Bars are stored only in one end of any of the ProSeries bridges, (5 top) and (3 bottom), and are held in place with the Pro Bar Pins and Lynch Pin Clips.
The Pro Bar System allows components to be connected in a pre-loaded state without sag due to a 3/8" offset between the Pro Bar's 3 holes.
NOTE: Only two holes are used at any given time. The CENTER hole is ALWAYS used.