Easy Installation: These Wheeled Cord Locks can be installed in seconds. Simply insert the paracord through the narrow flat end and extend it from the wide end. Slide the wheel to the narrow end to lock the cord, or slide it to the wide end to release, allowing for adjustable cord length Wheel Design: Made from sturdy PP, these Wheeled Cord Lock Stopper feature a solid sliding mechanism that won't rust. Unlike traditional spring locks, this design has only 1 moving part, providing a tighter grip under increased tension for reliable use outdoors Versatile Applications: Ideal for securing and organizing paracords, drawstrings, and shoelaces. Ideal replacements for accessories like backpacks, luggage straps, sweatpants cords, tents, tarps, boots laces, and pet collars Compact Size: Available in 4 sizes, from small to X large, making them compact yet effective for various uses without adding bulk Package Includes: Comes in a package of 50 pieces ensuring you have plenty on hand for multiple projects or replacements as needed (note that ropes are not included) Specification: Material: PP Size Chart: Optional Sizes (L*W) : Small : 2cmx1.6cm/0.79inchx0.63inch or Medium: 2.3cmx2.1cm/0.91inchx0.83inch or Large: 3.5cmx2.6cm/1.38inchx1.02inch or X Large: 3.9cmx3cm/1.54inchx1.18inch Package Includes: 50xWheeled Cord Locks Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.