The 2 -hole plastic cord stops allow you to adjust and fix the length of the cords directly to the opening of the tunnel, sweatshirts, pants or gym bags. Thus, they prevent the cords from sliding and serve as a reliable closure. They are washable up to 40 degrees. TAILLE: 23 x 20 mm. For a passage of a cord up to 5 mm in diameter. Coloris: white. Material: Plastic.Egally called stop cord, cord block, cord block.