Hello
I have an unused Bent endpin for sale. Francois Rabath inovation.
More info:
https://www.christianlaborie.com/english/innovation.html
https://doublebassblog.org/2008/11/on-bass-endpins.html
https://www.notreble.com/buzz/2015/06/29/whats-this-angled-endpin-business/