VELCRO® brand Adhesive-Backed Hook Tape Adhesive-backed, high-closure-strength hook material that will not snag or fray clothing.Medical hook is also called Fine hook, Standard hook is the most commonly used and gives slightly stronger bonds than Fine. Fine hook is smoother, less abrasive, and generally used with the adhesive-backed version. We recommend Fine for most medical applications unless absolute maximum strength is required (knee braces, relatively short closures).