thank you for the information. I measured the rod ends not the ferrulls. this rod slips into a handle with a male ferrull and it's 10mm the top end is 8mm and is female then the other section is 7 mm and male and the next end is 5mm and female then the last end is 4mm and male with a 3mm tip. so if this is right what size ferrulls do I purchase I'm confused. Thank Walter