Universal Horn Button Retainer Ring
The inside hole, where the button attaches, is 51mm.
Example: Suits MOMO Horn button and buttons of 51mm dia.
Will NOT suit Nardi Horn button.
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.)