This is a mount adapter that converts Leica M-mount lenses to Leica L-mount (bayonet). It allows you to attach Leica M-mount lenses to L-mount cameras (Leica T/TL/SL, LUMIX, SIGMA, etc.). The items for sale are the adapter body and the original box. Purchased in October 2024. Selling due to equipment consolidation. There are scratches from normal use, and the manufacturer's logo has been lightly inked. Due to the nature of mount adapters, I cannot provide any guarantees regarding infinity focus, compatibility with specific lenses, or the fit between the lens and the camera body (e.g., looseness or tightness). Please understand this before purchasing.