Some more results with custom handles on my chrome FaTip Grande head.
Tradere fits:
Edwin Jagger DE89 fits:
Gillette Fat Tech fits:
Gillette NEW OC fits:
Handles that doesn't fit: iKon Bulldog, Mühle R41, some other vintage Gillette ball ended OLD and TECH - the screw on the FaTip is to slim.
In a few days I'll try with the Parker 98R Heavy Duty Premium Barberpole handle.
i use and ikon bulldog handle with my fatip piccolo head and it's fits just fine.