1" W x 3ft length. VELCRO Brand ALFA-LOK fastener is a strong, self-engaging, multi-directional fastener and is easy to use. The ALFA-LOK quadrilobal mushroom shape ensures a firm and reliable connection and is engaged, at any position, by pressing the two parts together. Shear strength 72 psi. ALFA-LOK fasteners have been developed for use in a wide range of applications from solar panels, signage and exhibition stands to fixing the interior of trains, cars and buses. High performance double sided acrylic foam tape LSE11B. Suitable for most surfaces such as glass, aluminum (anodized, raw), steel (stainless, galvanized), Plywood/MDF, Formica (polished side), Cardboard, Painted Wallboard, Concrete, Stone, ABS, Polyester, Vinyl, Polyacrylic/PMMA, Polycarbonate, Polyethylene, Polypropylene and Fabrics. Stronger shear strength of 72 psi compared to 3M Dual Lock.