Hook-and-Loop Fastener, Hook, Hook and Loop Shape Roll, Length 75 ft, Width 3/4 in, Color Black, Flame Retardant No, Backing Material Nylon, Shear Strength 14 lbf/sq in, Adhesive Type Acrylic, Characteristics High Strength, High Temperature, Long Lasting Nylon, Pressure Sensitive These genuine VELCRO(R) Brand Hook Rolls offer both performance and versatility. They are manufactured from high-quality nylon and offer optimum performance and long-term product life. Backed with high-performance acrylic adhesive, they can also withstand a broad range of temperature variations while maintaining bond strength to a wide variety of substrates.