Each package contains
Threaded O.M.A.J boro base,
Threaded black delrin nut and Joystick
Black delrin tip
(the whistle includes black delrin o ring base tip and whistle sleeve)
Each are roughly 17.5mm tall and the bore for each is
4mm mtl
4.5mm whistle
5mm dl
All tips, are boro threaded only...
standard precision spec 2a threading to fit any boro mod
or bridge using the standard BB threading
The bases are 304 grade stainless steel
All tops and nuts are interchangeable with all bases