4mm Flexi shaft with 80mm Solid section at the end within the overall measurement of 400mm

Cut it down but don't forget to solder it first. This helps reduce splaying strands. Acetone it thoroughly in order to remove any highly corrosive flux and then re grease to limit corrosion. 

All shafts come with Right Hand (RH) threaded nuts.

We also sell a wide range of accessories such as Dog Drives, Stainless Grub Screws, etc. Here