Reply to 10k linear fader help

Im just starting my DIY project and its the last thing i need to buy but i am struggling to find anything within the uk. Anyone within uk know of any?

I found this: 10k Fader
It looks like it will be fine but i have a question about the fader knob that fits it which is here (this may be my misunderstanding of mounting the fader) but in the picture it looks like it sits VERY high.

My head is mangled from looking at so many faders there is probably a simple answer here.

Thanks