Gorilla Max Strength Mounting Tape, our strongest mounting tape, includes a mesh reinforced layer making it 1.5x stronger than our Heavy Duty Mounting Tape. It mounts in an instant for a permanent bond that holds 3 pounds per 4 inches of tape! Gorilla Max Strength Mounting Tape is perfect for indoor projects and sticks to smooth and rough surfaces. Bonds to painted walls, mirrors, plastic, metal, wood, glass, ceramic and more. Weight limits may vary depending on surface texture, porosity and flatness of surface. Both surfaces must be completely flat to make full contact with adhesive.