Amazon.com: Kamerar MagFilter 52mm Threaded Adapter Ring with Carrier Bag, Magnetic Lens Filter Adapter Rings for Sony RX100 IV, V, VI, VII, Canon G5X Mark I II G7X Mark I II III
Kamerar MagFilter Magnetic Lens Filter Adapter Rings for Compact Camera, Canon, Sony, Nikon, Panasonic
MagFilter CPL (Circular Polarizer) Filter - Protech Distribution
Carry Speed MagFilter Threaded 52mm Adapter Ring 6576 - Adorama