Dl-Lck Reclosable Fastener 250

3M(TM) Dual Lock(TM) Reclosable Fastener 250 SJ3209 Black, 5000 per case Black, polypropylene reclosable fastener with pop-in square top with pine tree stem, 250 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. Popin Dual Lock Reclosable Fasteners are designed for mechanical attachment like riveting or popping into place