This is just a simple paracord lanyard with swivel clips on both ends attached with hangman's noose knots. One end can be attached to a belt loop and the other to a knife, flashlight, multi tool, or keys and hangs down inside your pocket. You can unhook the belt loop attachment and reattach it to whichever item you've got on it and it becomes a wrist strap. I found the swivel clips on ebay, they are about 3/4" x 1/2" in size, and your local hobby/craft store may have them or something similar as well. Or you can cannabilize other inexpensive keychains for them, try walmart.