AF T25mm steel, zinc-nickel 8.8 12 pieces are required Grade A – perfect repair Product description Whoever maintains and works on their scooter themselves should make sure a supply of suitable fastenings, gaskets, etc. are available in your workshop all times. What can be more annoying then being in the middle of a complete engine rebuild or similar to be stopped in your tracks by the lack of any particular nut or bolt OEM numbers (for comparisons): (PIAGGIO) ISO 14581 (DIN / ISO Norm)