Wanted Cyclus reamer handle (seat tube)

[MatBH5]

Hi, I need to clean down a seattube, and as I always like an excuse to get some new tools together... I bought a reamer/cutter from Cyclus. However, I now find the handle part impossible to find in the uk. Some of the German bike shops stock them but erm... Brexit/taxes etc.
So does anyone have one for sale, or even I could borrow, as I can use my own cutter?
Thanks
Mat