3M(TM) Scotchmate(TM) Flame Retardant Reclosable Fastener Hook SJ3419FR Beige, 1 in x 50 yd 3.9 mm engaged thickness, 12 per case Bulk Flame resistant, no adhesive, nylon, woven hook reclosable fastener, 3.9 mm engaged thickness, temperature resistant to 250 degrees F and meets F.A.R. 25.853 paragraph (a)(1)(i) 60 second vertical burn test. Mates with SJ3418FR, beige. It's as simple as pressing together and pulling apart. When your product calls for thousands of easy openings and closings, 3M (TM) Scotchmate (TM) Reclosable Fasteners pull through for your. Tiny, stiff hooks mesh with pliable loops for quick secure fastening. In addition, Scotchmate reclosable fasteners are backed with 3M adhesive techonology expertise which range from rubber adhesives to high performance, double-coated foam tape which can be adhered to most surfaces to provide a solution as strong as you need. Nylon, flame retardant, sewable, hook and great for aerospace applications.