Review on Ravenox Strong Barreloc Cord Locks for Drawstrings, Rope, and 1/4-Inch Cords - Ideal Cord Locks for Strings, Bags, Twine, and Outdoor Activities - Bungee Cord Ends for Improved Durability by Jennifer Roberts

They appear to be very well made and hold up well even to the weather resistant slippery cord we had to use for the project. They're a little pricey in quantities that you can ship within a reasonable amount of time, but if you're willing to wait a month or so the wholesale prices seem pretty good even if they're all from the same place. . I don't understand why I can buy 10 packs of 10 and get them in two days, but a pack of 50 takes a week. However, they are a good product and appear to be quite durable. I'll give them some time to see how they hold up.