The basics Scotch® Mounting Foam Tape 1/2" x 150" The pro tip Not recommended for use on wallpaper, delicate surfaces or walls painted with flat paint. Photo safe. The uses Use for strong, permanent mounting with things like rubber stamping projects, 3-dimensional arts and crafts and more! Great for layering items.  The bottom line This package contains 150 inches of 1/2 inch wide foam mounting tape. Conforms to ASTM D4236.