1ZINC ALLOY: Metal cord locks end spring stop toggle is made of zinc alloy, it is not easy to rust, durable and lightweight, the spring is not easy to break, it can securely hold the rope or shoelace. 2ERGONOMIC DESIGN: Cord stopper features an ergonomic spring design so you can easily adjust the length of the cord and move the cord locks to a level and position that is comfortable for you. 3CONVENIENT AND PRACTICAL: Cord locks end spring stop toggle stoppers are convenient and practical, well made, very easy to adjust or loosen and work perfectly every time. 4APPLICATION: Lanyard string cord toggles are suitable for lanyards, drawstrings, luggage, clothing, backpacks, sportswear, shoelaces, laundry bags, jackets, hats, organizers and other uses. 5BEST DIY GIFT: Metal cord locks end spring stop toggle stoppers for DIY parachute cord shock absorbing drawstring, great for crafts and handcrafted, best DIY present for your family. 30 x Metal Spring Cord Locks