Deep Bag Nuts 0.2 inch (6 mm) [Cylinder Head Nut & Exhaust Nut]
400 Series Stainless Steel (Magnetic)
[Compatible models]
DIO AF18/25
Super Dio AF27/28
Live Dio AF34/35
Lead 50 AF20
Lead 50, AF48, etc.
However, even the above models have a cylinder stud type.
It must be modified.