APPLY TO - A spring cord lock can be widely used for lanyards, luggage, clothing, backpack, shoelace, tents, and moreSPECIFICATION:Color: BlackMaterial: PlasticSize: 33 x 17 x 6mm / 1.30" x 0.67" x 0.24" (L*W*H)Hole Diameter: 4.5mm/ 0.18"Net Weight: 18gQUANTITY INCLUDED - 10pcs x spring cord lockADVANTAGE - Made of plastic, durable and lightweight, not easy to break and sturdy you can use them for a long timeINSTALL: Once the cord is easily threaded through the holes, a simple squeeze permanently the alignment mechanism and engages the metal spring to grip any cord.Note: Please according to the length and width of your needs choose the proper spring cord lock.