1. Spring Design: The rope closure buckle features a spring mechanism, allowing the rope to move up and down while keeping the cable firm and secure. With a simple tap to open, loosen, or lock, you can easily adjust the length anytime, making it convenient for daily use. 2. Zinc Alloy Material: The inner part of the shoelace rope lock is crafted from quality zinc alloy, ensuring durability. It is dustproof, waterproof, and resistant to color fading even after prolonged use. The sturdy construction prevents breakage from repeated stretching and adjustments, guaranteeing longterm performance. 3. Wide Application: This spring pull rope lock is versatile and suitable for various items, including sportswear, luggage, trouser buckles, shoe buckles, backpacks, backpack straps, clothing, and crafts. It allows you to adjust the rope length effortlessly anytime. 4. Dual Control Design: The rope lock stopper is meticulously polished for a smooth surface with no sharp edges. Its doublehole design enables simultaneous threading of two ropes, making length adjustment convenient. Additionally, it is rustproof, waterproof, and machine washable.