K&f Concept M42-m4/3 M42 Lens To M4/3 M43 Mount Adapter To Micro 4/3 M43 Mft System Camera Mount Adapter - Lens Adapter - AliExpress
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