The retractable roll up banner stand is easy to use,quick installation and convenient to be carried around the trade shows and presentations.Standard graphic size 33"x79", a little narrower is okey. Installation tips: 1. A piece of vinyl with pre-applied self adhesive tape connect your banner with the retractor. 2.A safety pin at the side of the banner housing stops the retractor. Grip the vinyl before taking the pin out, or the vinyl would get sucked in the housing and difficult to have it out. 3.The clamping bar is 2 pieces of aluminum extrusion working together to hold the banner in place. The 2 plastic caps at the ends would strenthen the grip.