Leica 14286 Adapter for polarisation filter E67/E49 for M 28-35-50 f/4

The Leica 14286 Polarizer Filter Adapter E67/E49 for M 28-35-50 f/4 is a 49 mm to 67 mm step-up ring that allows Leica E67 filters to be mounted on lenses with 49 mm threads.