[8 Sizes] Package includes about 160pcs spring cord locks in8 various size; offer more choices for your crafts making [Cord fastener] double-hole and single-hole with spring loaded can keep your cord tight, stop the cord or drawstrings from slipping. [Material] Made of plastic in clear design; lightweight and durable to use, can be used for a long time [Easy to use] can be firmly held no matter where it is used. It is easy to install and use. [Wide applications] Plastic cord locks fit a variety of drawstrings and cords such as elastic shoe laces, pack drawstrings, sportswear, tents, paracord products and many other outdoor and gym accessories. You can also use the plastic spring toggle as a replacement of accessories for no tie shoelaces.