GR2 Titanium nail. This Ti Nail will adapt to any 14mm or 18mm male or female grind. Simply unscrew from the centre (when its cold, of course) and flip it up the other way to suit a male grind or the reverse to suit a female.
We always recommend an attachment or sorts to save breaking the integrated grind of your rig- better to break a cheap adaptor than an expensive rig.
Carb cap available separately.