Bowden cable controls dual slider

I made my own Bowden cables with 2mm PTFE tube (inside diameter 1mm) and 0.8mm braided stainless steel cable. I use these cables to control animatronic features like eyelids, eyebrows, ears, and eyes for 3d-printed puppet heads.

These parts were made for these cables (they are too small for bicycle brake cables). 

The metal part these parts were meant to fit is a GardenMate weatherproof lawn hook.

Here's how it looks assembled: