3M™ Dual Lock™ Reclosable Fastener SJ3700 is a black, polypropylene reclosable fastener with a 20 mm x 20 mm, slide-in, rectangular base and has a stem density of 170 stems per square inch.
3M™ Dual Lock™ Reclosable Fastener Slide-In Piece Parts attach without the use of pressure sensitive adhesive, and come with a variety of bases that can be slid into holes of precise dimension. They are easy to install and require no special equipment or skills.