Kickzu Double Hole Drawstring Stopper Cord Lock, No Tie Shoe Laces, Shoelaces Buckles, Shoe Lace  (Black Set of 1)

Material: Alloy; Packing List: 2Pcs x Metal Cord Locks ; 4Pcs x Bell Stopper Hole Diameter: 3 mm/ 0.12"; Overall Size: 12 mm x 10 mm/ 0.47" x 0.39" (D*H) Alloy Material: The round cord stops are made of alloy material, light in weight, not easy to break. With electroplate surface treatment, no need to worry about rusting, can be used for a long time Spring Loaded: The spring design of cord locks acts like a clamp that holds the cord tight so it won't slip out. It keeps your cord stays in place and doesn't slip out. Instruction: Simply squeeze together to slide the cord lock freely up and down. When released, the tension tightens, keeping the cord lock in place.