DescriptionThis Spring Cord Lockis made of plastic and metal material, which can withstand the long-lasting use. Features fine workmanship , which has high durability, not easy to deform. Suitable for clothes, shoes, trousers, backpack and other items. It is one of the best choices for you, so do not hesitate anymore!Features-Color:Black -Material:Plastic and metal -Size:1.50X1.50X1.00cm/0.59X0.59X0.39in- Wide application, it is suitable for a variety of DIY rope products and many scenarios.- You don't need to worry the shoe laces being loosening frequently. It can keep your shoelace tight.- They are perfect for shockproof cord, elastic cord, finer cords, pull cords, draw cords, wet cords, etc.- These are great for use on sweatpants or hoodies to keep from losing the drawstring and to tighten the cord as well.- With rationalized dual and single holes structure design, easy to install and detach.