This tool has been developed to assist the removal of the dreaded 'C' ring which retains the helix in pens such as the 146 and 149
Manufactured from hardened stainless steel the tool should be inserted behind the broken helix as shown in the photographs,and the tip inserted in the gap in the ring. By pushing down, the tip will get behind the ring allowing it to be flicked out.
Please go to the Attachment tab and download the video file which demonstrates how to use this tool
As extra feature the end of the tip is magnetised to be able to retain the ring to assist removal.