Thanks now I know what you need and yes it is the entire end piece you are looking for. I can't help on that. If it was just the threaded slide nut I made my own for mine because they were missing. I used a piece of 1" aluminum stock and cut it down to the right size then drilled and tapped it. If that was what you needed I could make that for you. But your needs are bigger, sorry. Maybe someone else has a bar for parts. You might want to check with Mike of Simple Engineering.