3M Dual Lock SJ3465 black reclosable fastener comes in a 9/16 in width and is packaged 1000 pieces per case. 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 mushroom hook side with a density of 400 stems/in. This is a non-adhesive based reclosable fastener.
