3M™ Dual Lock™ 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. Rigid backed Dual Lock™ are designed for mechanical attachment like riveting or popping into place

Black, polypropylene reclosable fastener with rigid backing, rigid backed circle with hole 400 stems per square inch, 1 1/8 inch (28.5 mm) outside diameter, round rigid backed reclosable fastener.

Rigid Backed Circle with one hole 400 Type 400 Fastener SJ3762, 28.5 mm, 5000 per case