The 3-cord cord lock is to the right in this larger photograph.
The Roman Shade 3-Cord Cord Lock is suitable for a shade with up to 3 cords. It features a no-rust metallic base and slots to separate three cords encased in a UV resistant housing.
Each cord lock includes (2) #6 x 1/2" self-drilling screws to attach to the cord lock to your shade mounting board..
Installing & Threading Your Cord Lock