How to install the vinyl rack?

Mobile Vinyl Rack Product Introduction
1) Three models:
MVR01-12，12 rolls materials available;
MVR01-16，16 rolls materials available;
MVR01-20，20 rolls materials available.
2) Two inner diameters for you to choose, complying with the international standards:
φ2 inches（φ48-53mm) / 3 inches（φ75-80mm)
3) Aluminium alloy material with good bearing weight.
4) High quality universal wheels are on the bottom, pushing the materials so easily towards any directions.
5) Application:
Advertising coiled materials: PP、Photographic paper、Car sticker、cold laminating film....