3M TB3546/TB3547 black reclosable fastener comes in a 1 in width, 10 ft length, uses an acrylic adhesive and is packaged 1 bag per case. Can be used to a maximum temperature of +200 F. These products are generally considered "hook & loop" products. While the traditional system is that of a hook and a loop, some of these products also use an interlocking mushroom like head. This particular 3M item is the hook & loop side with a density of 300 hooks/in. This is an adhesive based reclosable fastener.