ABU Ambassadeur Small Fibre Brake Collar. Better known as the centrifugal brake blocks these are the small size blocks which fit many of the older Ambassadeur models.
Size: 2.8mm long x 2.3mm outside diameter x 1mm bore.
They do not fit later model reels. If in doubt please check the schematic for your reel or contact us for help.
ABU part No 1844.