Features:This adapter is compatible for Techart LM-EA7 lens adapter and when you use the two adapters together, the combination of two adapter is capable for M42 lens to become an auto focusing lens. This M42-LM adapter won't affect any function of your camera, and not support with auto focusing. Nice machining ensures perfect thread, it can install in between camera body and lens without any tools.Compatible for M42 mount lens, for Leica M mount cameras.Made of stable alloy and plastic, lightweight and durable for long-term use.Specification:Condition: Brand NewMaterial: Plastic + AlloyColor: BlackCompatible Lens: for M42 mount lensCompatible Camera: for Leica M mount camerasCompatible Lens Adapter: for Techart LM-EA7 lens adapterWeight: Approx. 84gPackage List:1 * M42-LM Lens Mount AdapterNote: The M42-LM adapter doesn't supports auto focusing lens.