HOUSON Bicycle Seat Tube Head, enkele spijker zitstang klem fiets zadelpen adapter voor elektrische fiets, middenmotor, koppel, MTB, vouwfiets

Seems like a decent-ish product. Works exactly as one would expect a bike seat clamp to work. Although I'd probably only be comfortable using it as a temporary measure out of unexpected neccesity until I could buy a brand-name alternative.

arrived in clear bag, did not fit so was not satisfied,also poor quality and bendydoes not come with anything to attach it,does not come branded