Whether it is thick or thin curtains, this curtain buckle can be applied. The strong magnetic tie backs will hold the curtain tightly without sliding down. For ultra-thin curtains, you can twist the rope of tie backs twice and then fix it. Total length 18.5 inch, ball's diameter is 1.25 inch, could be twisted to adjust the length to meet your need, so no need to worry about the size is too big, suit for small curtains, thin curtains, sheer curtains, lined blackout curtains, thick shower curtains, wide patio door and sliding door curtains. Make of polyester material, not easy to get off the line. Strong and not easily worn or pilling. Great to use with curtains, drapery, sheers. Attractive modern design of these rope curtain tiebacks, perfectly match with your bedroom, living room, office and so on. Best gift choice for family, friends.