DIY Motorcycle CCW Tank Bag

This is a CCW bag that I fitted a tank ring mount to securely mount on my motorcycle.

[jamesperkins]

Same question as everyone else. Where did you get the tank ring?

[cbrxxsf]

where did you get the tank ring mounting hardware?

[gGraham]

Hello,
I have been looking for the mounting hardware to mount a bag on to my BMW R1150R.
Where did you find the tank lock parts to attach to the bag and the bike?
Thank you.
Graham