These ball chain connectors are made of good quality plastic; And the white color matches all types of shades and vertical blinds. These plastic chain connectors are approx. 1.7 x 0.7 cm in size (L x W), standard size for chains. The standard roller blind chain connectors are suitable for various blind chains, you can use it for curtain roller, roman and vertical blind chains. The bead chain connectors are easy to install and remove; They are not easy to break and can be applied repeatedly for a long time. Package contents: 20 pack plastic chain connectors, they are lightweight and durable, serving as good accessories for blind chains; And plastic bead chains are not included.