Hello nicksaint26.
I have a searing shaft, 29 in long, has 5/8 in ivory Ferrell, black collar with silver ring. Is 13 mm at the Ferrell, the taper starts slowly getting thicker 2 inches from the Ferrell. There is a lot of wood left to turn down if you desire a longer taper or smaller diameter Ferrell.
I had Denis make this for me around 2005 or 6. I have no proof it is a searing shaft other than my word.
It has been in climate controlled storage for 16 years. the ivory Ferrell has a hint of yellowing.
If the shaft interest you send me a pm. The shaft will not be cheap.
Thanks
PS...,......THERE WILL BE NO TRANSACTIONS (with me) WITHOUT PHONE CONVERSATIONS FIRST