3 pin connector kit for the new AR6400 and AR6400L brick (the AR6400 is inside the new Parkzone SU-26 Sukhoi)

Also used on a Parkzone Green-Dot-Vapor-Brick, if you've attached the female nano-jst connectors (available here on this site!)

The term that's starting get used for these is NANO-JST. Note these are NOT a Micro-JST, as what's used on an AR6300 Receiver (and several other micro receivers), they are smaller.

You get the housing and 5 pins total, since you WILL need extras to practice crimping!