Velcro, 2 Count, 4" x 2", Brand Industrial Strength Extreme Strips, 2 Sets Titanium, Specially Formulated Adhesive For Rough Surfaces Such As Concrete & Certain Types Of Brick, For All Weather Conditions, UV Resistant, Features Our Strongest Hook & Loop Closure, Superior Holding Power Meets The Requirements Of Demanding Indoor & Outdoor Applications Without Drilling, Nails, Screws Or Epoxy.