Selling to organize my equipment. It's thinner and more robust than helicoid-type adapters, and unlike helicoid types, there have been no reports of oil leaks. Purchased new from Map Camera in September 2025, and attached to a SIGMA fp 4-5 times. It's in very clean condition. No original box. Lens mount: Leica M Body mount: Leica L (Leica SL) Please refrain from purchasing if you are sensitive to used items.