APPLY TO - Widely used on shoelaces, drawstrings, lanyard, luggage, clothing, bag, backpack, and a variety of outdoor and gym accessories.SPECIFICATION:Material: PlasticTotal Size: 9 x 18mm/0.35" x 0.71"(D*L)Large Hole Diameter: 6mm/0.24"Small Hole Diameter: 3mm/0.12"QUANTITY INCLUDED - 6pcs x Bell End StoppersADVANTAGE - Made of plastic, durable and lightweight; The plastic bell end stopper is a multi-purpose management tool. It's an excellent product for camping accessories. Our zip clip buckle can be used in dryer .INSTALL: Just stick it through, tie a single knot, and pull hard. It will give you a firm grip, help prevent drawstrings from slipping.Note: Please according to the thickness and width of your needs to choose the proper cord lock.