M42-Micro 4/3 Speed Booster Focal Reducer Adapter | Pixco - Provide Professional Photographic Equipment Accessories
Lens Adapter - M42 Screw Mount Lenses to Olympus 4/3 Mount Cameras – Fotodiox, Inc. USA
Fotasy M42 Universal Screw Mount Lens to Micro 4/3rds Mount Legacy Lens Adapter — F Stop Cameras
Amazon.com: Lens Mount Adapter for M42-4/3 Lens Mount Adapter for M42 Lens to 4/3 Lens for Olympus E620 E520 E510 E500 E420 E410 E400 E330 E3 Panasonic L1 : Electronics