Foam squares with two coats are perfect for attaching decorations and artwork to a range of surfaces. Heavy-duty, all-purpose foam tape is made to mount light to medium-weight items to walls and other surfaces. fits a lot of textured walls. Adhesive is on both sides of each 1 in x 1 in square, and four squares can hold up to 1 lb (16 squares can hold up to 4 lb). There are 16 1 in x 1 in squares in each pack.