Springs Window Fashions/ Graber/ Bali G85 control end with 72” chain (35” on either side) drive. Authentic Graber part brand new. If your Graber/Bali vertical is stripped and doesn’t move when you pull the chain this may be the solution to your problem. Loosen and remove the screws on your old control remove insert new controls and tighten the screws. Make sure your slat carriers are in the open position when installing new control. Buy more get a discount.