Durable Security Cable: Made of strong and sturdy POM plastic, light and not easy to break, can have a long service life. Spring Loaded Design: Make the cable lock easier to work with, make sure your cable stays tight and secure, and keep the cable or cables from slipping. Package Contents: 20 black locks for drawstring, drawstring, tensioner and more; Note: Small items, not suitable for children under 3 years of age. Double-hole cable lock: each plug is 22 mm long. Hole diameter: approx. 6mm, suitable for most types of cords and cords. Application: These spring cord ends can be used for cords, luggage, shoelaces, clothing, backpack cords, hood cords, tents, sportswear, sports suits, boots, etc.