3M SJ3532N-1X50-BLK ~ Hook Fastener SJ3532N Black (1 Inch x 50 Yards)3M Hook Fastener SJ3532N, Black, 1 in x 50 yd (25. 4 mm x 45. 7 m) The 3M Hook Fastener SJ3532N is one part of a two part fastener solution designed to provide great durability for thousands of closures With its medium tack, rubber based, pressure sensitive adhesive backing, this fastener allows for easy and convenient attachment to a variety of substrates, including plastics This fastener is an attachment alternative to a wide variety of closures,