2pcs Faucet Tap Water Filter with Replacement Pads, Kitchen Tap Filtration Activated Carbon Clean Purifier for Home/Dining Room/Bathroom/Shower Hose(White+Pink,Size:8 x 3cm)

I can't find a tap anywhere these would fit, looked around plumbers merchants and DIY sites..The actual opening is 10mm far too small to fit any of our taps and I suspect that it would be a push to fit on any UK tap size.

I'm not sure what taps these are intended for, but I tried on every tap in my house and all of them are too wide to attach the filter to. Perhaps they're designed for taps from a different country, but they're no use to me.