Wow, 1000 cord locks - now that's what I call being prepared! These Paracord Planet dual circle cord locks are seriously tough little gadgets made right here in America. Each one measures about 0.78x0.58x0.20 inches and has two openings that perfectly fit 1/8-inch cord or 4mm cord. The holding strength is about 2 pounds with a 15% variance, which is plenty for most applications. They're made from the same tough material used in vehicle engines and can handle temperatures from -50°F to 150°F - talk about durable! The stainless steel spring won't lose its memory, so they keep working reliably year after year. The contoured design makes them easy to find and operate by feel, which is great when you're wearing gloves or working in low light. Uses are endless - drawstrings on jackets and pants, backpack closures, shoe laces, paracord projects, camping gear, emergency kits, you name it! Whether you're a manufacturer, serious prepper, or just someone who uses a lot of cord locks, buying in bulk like this saves money and ensures you always have them when you need them. The quality is noticeably better than cheap imported versions that break easily. Your gear deserves these reliable American-made cord locks!