The JUMINIZ 20 Sets 1X4 Inch Hook and Loop Fastener Strips with Adhesive are heavy-duty nylon fasteners designed for various uses such as sewing and crafts. The adhesive backing ensures easy attachment, while the protective black color adds a sleek look. Made in China, these fastener strips measure 1 x 4 x 0.1 inches and come in a convenient set of 20, making them a versatile and reliable choice for different projects.