Universal Horn Button Retainer Spare Ring:
The outside holes are 2 3/4 or 70mm, center to center.
The inside hole, where the button attaches, is 1 15/16 or 50mm.
The ring has both 70mm and 74mm PCD holes and can be used with Momo, Nardi, Personal, OMP, Sparco, Simoni, Raid, Italvolanti (6 bolt fit) and other steering wheels.
PCD:
6x74mm (Nardi, Personal, Luisi type etc.)
6x70mm (MOMO, Sparco, OMP, Raid, Sabelt type etc.)
