This frame design is elegantly simple, inexpensive compared to other framing methods, and makes changing your art a breeze! Made of premium plywood in a variety of wood and painted finishes, they utilize magnets and work like a clamp. You can frame art easily yourself, without damage. These frames are perfect for standard or odd size prints, posters, photos and linens. Install using screws, string (both included) or even 3M Poster Strips (not included). Each set of STiiCKs comes with 4 strips of wood embedded with really strong magnets just below the surface. This creates an even clamping pressure across the entire frame. They click together without putting holes in your art - photographs, posters, prints, even fabrics. We like to recommend these frames for the 9" x 12" Barloga Studio prints we carry at 16 Hands.