Velcro straps are a black polypropylene hook and loop bundling strap that secures JEDEC trays using a D-Ring fastening system. Available in both standard and ESD versions. The ESD version is designed with a metal buckle to insure a complete static loop. Unlike other “dipped” products that have a limited shelf life; these ESD straps are permanently conductive on both sides < 105 with ESD marking printed on strap.