Round Air Vent Car Magnetic Phone Mount, for Mercedes Benz A/B/C/E/S-Class Phone Holder Compatible with MagSafe, 20 Pieces of N52 Super Strong Magnets

Walmart - CozyCollective

Designed for circular air vents, Magnetic mount head, Black finish, Form factor matches video

Round Air Vent Car Magnetic Phone Mount

eBay - euro-motor-parts

Designed for circular air vents, Magnetic mount head, Black finish

Magnetic Car Phone Holder For Round Air Vent, Suitable For Mercedes-Benz And Other Round Vent Cars, Black/Grey/Red, Compatible With IPhone & Android

Shein

Designed for circular air vents, Magnetic mount head, Black finish