TAD Stillpoint adapter thread size
 

I'm considering buying Stillpoint Ultra 5 for my TAD Evolution One. Does anyone know the Stillpoint adapter thread size?

I contacted Stillpoint and they only have info for Reference One.

"Stillpoints Adapter M10-1.5 to 1/4-20 (1" length)"

Is Evolution One the same size?

I know I can take the spike and have it measured at Home Depot but is a PITA so hope someone can save me some work:D