PARACORD PLANET Single Barrel Grenade Cord Lock Draw String Toggle Stopper in Choose from 5, 10, 20 Pack Sizes Width (with handle): 17.5mm, Height: 31.5mm Hole Size: Approximately 5mm (Fits one strand of #550 Paracord) Cord lock is made of plastic with an internal spring that is spring loaded (Consists of barrel, toggle, and spring) Slide the cord lock by releasing the tension to slide the lock up and down your cord or draw string to a desired position A great creative add-on to any of your paracord projects, lanyards, clothing, backpacks, and much more!!