APPLY TO - The cord locks can be used on everything from shoelaces, backpacks, clothing, luggage, pants closures, tent, or other outdoor products.SPECIFICATIONColor: BlackMaterial: PlasticCord Locks Size: 10 x 7 x 20mm / 0.4" x 0.3" x 0.8"(L*W*H)Hole Diameter: 4mm / 0.157"Net Weight: 11gQUANTITY INCLUDED - 12 pcs x Single Hole Cord LocksADVANTAGE - Made of plastic, sturdy, durable, anti-rust, lightweight, and not easy to break, you can use them for a long timeINSTALL: When the toggle is squeezed, tension is released and the cords can move freely within the lock.When the toggle is released, tension is engaged and the cords are held firmly in place within the lock.Note: Please according to the thickness and width of your needs to choose the proper size cord locks.