It's a fitting that comes with the front rack they have (a Minoura Gamoh porteur). Looks like mickey mouse.
The figure 8 brackets that fit onto the QR skewer also come with PDW mudguards. I don't know if they're available for sale separately (or what you call them!).
bargain: https://www.sjscycles.co.uk/mudguards/pdw-eyelet-set-for-full-metal-fenders-pair/
@Raphael started
London Fixed Gear and Single-Speed is a community of fixed gear and single-speed cyclists.
It's a fitting that comes with the front rack they have (a Minoura Gamoh porteur). Looks like mickey mouse.