For product assembly and introduction of Qbicle AQUair and Tangent fenders, please have a look at https://www.youtube.com/watch?v=bZX14l5bU5U
QBICLE AQUAIR at 2m10s and 2m58m~
QBICLE Tangent fenders 2m40m.
Enjoy your cycling with Qbicle products.