This is a genuine Leica M/L conversion ring. It's marked as 90mm, but on models with a built-in 28mm frame (M6, M4-P, etc.), the 28mm frame will also be displayed. There's some slight wear and tear, but it functions perfectly. [Shipping] Shipped via Click Post. *For "convenience store payment" or "bank transfer," please only purchase if you can pay within 24 hours.