Ketron Peek MB Helix Rod

This helix rod is manufactured from a plastic material called 'Peek' which is a much stronger alternative to conventional plastics.

This rod has a circular cross section which makes it stronger than the oval cross section currently in use 

Please copy the link below for a comprehensive description of this part from a renowned repairer of M.B pens. I think it is quite interesting, although i now sell a tool to remove the C washer without messing about drilling etc. 

I also make a tool for inserting the ring. A new ring is included with each helix ordered.

http://www.fountainpennetwork.com/forum/topic/276873-another-d-i-y-149-repair-pictorial