All metal construction. Sturdy, durable, easy to setup, easy to clean up. Spray 1 can and stores 12 cans ( entire case ). Low cost aerosol paint can line striping machine for painting, striping, marking of football, soccer, lacrosse, baseball, field hockey athletic fields. It's handle is easily removable for ease of shipping and storage. EcoStriper aerosol machine ships in a compact cardboard box. Just unpack, unfold the spray handle and firm it up by tightening the installed wing nuts. To spray paint, shake the aerosol can thoroughly ( as per label instructions ) then insert the paint can in the circular can holder. The line spray width can also be adjusted by lowering or raising the two wing nuts attached to the side of the can holder. To clean up any overspray, let it dry and then easily scrape it off, then store machine.