Dl-Lck Reclosable Fastener 400

3M(TM) Dual Lock(TM) Reclosable Fastener 400 SJ3788 Black, 6 in x 50 yd, 1 per case Bulk Black, polypropylene reclosable fastener, pressure sensitive adhesive with 47 mils acrylic tape and 400 stems per square inch. 3M (TM) Dual Lock (TM) Reclosable Fasteners have been used extensively in transportation, electronics, business equipment, machinery, medical and sign and display markets. When the mushroom-shaped stems interlock, tensile strength is high enough to replace mechanical fasteners in many applications, yet you can readily open and close Dual Lock fasteners hundreds of times. High temperature and solvent resistant. Black, polyproplyene reclosable fastener with 47 mils of VHB Tape.