These cord locks are great for no tie shoelaces DIY or lock replacement. Package include 12 pieces of locks. Warning: These locks are not for thin flat strings. Thick & Strong Spring - Unlike those cheaply made generic products, RJ-Sport cord locks use premium spring, thicker and made of stainless steel, so they can firmly secure cords or laces, even in demanding scenarios Market Tested Quality - Hold the RJ-Sport cord locks in your hand, you will feel how compact and smooth they are. These locks are used in our our no tie shoelaces, which have sold over 200,000 worldwide. Multi-Purpose - Apart from shoelaces, you can use these cord locks on pack drawstrings, pant closures, outdoor hats and many other outdoor and gym products Friendly After Sales Service - RJ-Sport cord locks are manufactured under strict quality standard and we are sure you will love them. If by any chance you were not 100% satisfied, please feel free to contact us, we normally response within 12 hours 12 pcs of RJ-Sport Heavy Duty Cord Locks, Double Hole Drawstring Stopper Fastener for No Tie Shoelaces and More