The roller shade ball chain and roller curtain control chain are both compatible with these bead stop springs, making them a versatile and practical addition to any window covering setup. Whether you're looking to replace old or worn-out parts or simply want to add some extra functionality to your blinds or shades, these stoppers are the choice. Features -Color:White -Material:Plastic -Size:0.80X0.80X0.70cm/0.31X0.31X0.28in -Elevate the functionality of your roller shades with these bead chain crimp stops. -Crafted from plastic materials, these crimp stops are built to last and ensure reliable performance. -With easy installation and adjustment, you can easily position your blinds exactly where you want them. -This 12-set package provides ample supply for multiple windows, making it a convenient and cost-effective solution. -Upgrade your window coverings with these essential accessories and enjoy enhanced control and convenience. Package list: 12 x curtain positioning buckles